I have a 1974 triumph spitfire with a sbc, it has a frame width of 19" and a track width of 49.5", i would like to install your mustang 2 crossmember do you see any reason why your 56" would not work if I narrow it?
Dear Welder Series… 1948 Chevy Pickup Mustang II?
Dear Welder Series…
I am restoring a 1948 Chevy pickup. I was inspired by the guys in Trucks. I want to upgrade the suspension but I am not sure what kit I need to order. Can you help me? I would like to get a complete front suspension kit.
Our 56″ kits are the right width for this truck, Jesse. We sell only the crossmember. To get a hub-to-hub kit, check with our dealers at:
Thanks for looking at Welder Series parts.
Dear Welder Series… how much to narrow my Mustang II?
I've got a customer that needs a Mustang II setup that is narrower than 56". He has channeled his front sheetmetal to the point that the tires hit the fenders on turning.
Dear Welder Series… ’35 Dodge Truck MII
My second question is do you think I will encounter any clearance problems with the spring mounts and narrower A frames?
Dear Welder Series… 1934 Dodge coupe MII
Dear Welder Series...
I am interested in your weld-it series x-member, my question is can it be flipped around to create a rear steer x-member?
Dear Welder Series… 1954 Chev MII
I'm looking at your mustang II crossmember kit, and I'm
wondering if it would be appropriate for a 54 Chevy that I
want to bag and have lay on the ground.
Mustang II Sway Bar
I just received an email from Grant Schwartz (say "shh-warts") of Schwartz Welding with some pictures of a Welder Series universal sway bar being used in a Mustang II application.
Dear Welder Series… how will I know where my truck will sit?
My question is: How do I determine how high/low to mount the crossmember to get my desired ride height?
Mustang II Article in Powerblock Magazine
Trucks!TV now has an article in the Powerblock magazine on installing our MII crossmember.
Dear Welder Series: MII frame stub dimensions
I am installing your Mustang II to a frame which I will build to. In other words I have no forward frame to modify. How should I build my frame?
’57 Ford Mustang II Install
Garth Webb installs a Welder Series MII crossmember in a 1957 Ford. Follow Along...
Mustang II Application Chart
I’ve added a table which tells you what track width Mustang II kits will work best on which vehicles. The list will be updated as I get time to go through the thousands of emails asking “what track width should I use on my ________?”
We are often asked about making a Mustang II crossmember kit for a track width less than the stock 56-1/2”. 56-1/2” is the distance from the rotors wheel mounting face to face. Aftermarket brake kits and rotors can change this 56-1/2” dimension. It’s good to have the brake kit, rotors, wheels and tires before deciding how much the crossmember should be narrowed.
Here are the steps I’d suggest:
Read all the way through this for best results.
Use our 56-1/2” kit, for either stock springs or coil-overs. Coil-overs will provide more spring to frame clearance and make it easier to dial in ride height and ride quality.
Get the wheels and tires that will be used.
Get the brake kit and rotors that will be used. (Might as well get the calipers, too, but this won’t affect the crossmember width.)
Mock up the car at ride height and position the wheels and tires, front-to-back and at the desired track width.
Compare the spindle height (the center of the wheel) to the height of the frame at the bottom. Decide on stock or dropped spindles. See our coil over kit instructions, page 6, or coil spring kit instructions, page 6 for info regarding this decision.
Decide on stock length or shortened (narrowed) control arms. The upper arm cross shafts on stock length arms will be about 29-1/2” center-to-center with a stock rotor-to-rotor face width of 56-1/2”. When the crossmember gets shortened, the control arms will move closer together by the same amount. See if there will be clearance issues because of this. Shorter control arms will move the pivot point out by their “shortened” amount, given that the spindle location does not change. Shorter arms will mean a slightly choppier ride. Get the upper and lower arms that you decide on.
Mock up the wheel/tire, spindle, brake kit, rotor, and lower control arm. Put the assembly in position in the fender of the mock-up. The tire should be very close to vertical. Make the lower arm level. This can be done on just one side. Measure from the frame centerline to the lower arm pivot and double that dimension. Or mock up both sides and measure lower control arm pivots center-to-center. Subtract the lower arm pivot dimension from 22-1/4” and you have the amount that the crossmember should have removed from between the rack mounts.
It will be necessary to use a shorter than stock rack. Some machine shops will do this and there are aftermarket companies that make custom-length Mustang II racks. Before making the crossmember shorter, confirm that a rack will be available.
|Chev, 1962-67 Nova||56"|
|Chev, Car, 1935-1954||56"|
|Chev, Pickup, 1937-1955 (early series)||56"|
|Chev, Pickup, 1955 (second series)- 1959||60"|
|Ford, Car, 1933-1948||56"|
|Ford, Falcon, 1964-5||56"|
|Ford, Car, 1954-59||58"||https://welderseries.com/57-ford-mustang-ii-install/|
|Ford, Mustang, 1965-6||56"|
|Ford, Mustang, 1967-70||58"|
|Ford, Mustang, 1971-73||60"|
|Ford, Pickup, 1935-1941||56"|
|Ford, Pickup, 1942-1952||58"|
|Ford, Ranger, 1983-88||56"|
|Ford, Pickup, 1953-1979 F100||60"|
|Mercury, Comet, 1960-63||56"|
|Studebaker, Pickup, 1949||58"|
|Willys Jeepster, 1949||56"|
|Willys Pickup & Panel (with top hat frame), 1946-54||56"|
Stephen’s ’49 IHC Mustang II
Stephen sent us some pictures of his '49 IHC with our 60" Mustang II kit installed.
Dear Welder Series… Mustang II for ’65 Mustang, rack mounts
I specifically wanted to know if you have crossmember kits for 65 Mustang cars?
Trimming the frame for a MII
Here's a great example of what it takes to install a Mustang II crossmember in frames where the rails are too high, too thick, or just not nice to work with.