We have had quite a few questions about installing our Mustang II kit in cars that don’t lend themselves well to a conversion. Sometimes “modifying the frame rails” is necessary. What exactly do we mean by that?
I thought I’d put together some pictures that show a few frames that have been modified to accept a Mustang II crossmember. If you have any questions about your frame or any of our parts, please email or call toll-free: 1-888-648-2150.
![framemod01 This Oldsmobile frame has been bottlenecked to accept our Mustang II crossmember.](https://i0.wp.com/welderseries.com/wp-content/uploads/2010/02/framemod01.jpg?resize=450%2C338&ssl=1)
![framemod03 The '57 Oldsmobile has received a similar treatment, but the builder used larger diameter tubing straight forward from the firewall.](https://i0.wp.com/welderseries.com/wp-content/uploads/2010/02/framemod03.jpg?resize=450%2C300)
![framemod02 You can see the spring clearance notch in the frame rail in this picture of the finished '57 Olds.](https://i0.wp.com/welderseries.com/wp-content/uploads/2010/02/framemod02.jpg?resize=450%2C300&ssl=1)
![framemod04 Here is a Welder Series Mustang II in a 1978 Volvo. Extra material was 'wrapped' around the existing front rails of the unibody car.](https://i0.wp.com/welderseries.com/wp-content/uploads/2010/02/framemod04.jpg?resize=450%2C338&ssl=1)
![framemod06 A '57 Ford frame has the springs mounted inside the frame rails.](https://i0.wp.com/welderseries.com/wp-content/uploads/2010/02/framemod06.jpg?resize=450%2C338&ssl=1)
![framemod05 The '57 has been cleaned up and 2x4 tubing was used to mount our MII.](https://i0.wp.com/welderseries.com/wp-content/uploads/2010/02/framemod05.jpg?resize=450%2C338)
![1953 International Mustang II](https://i0.wp.com/welderseries.com/wp-content/uploads/2010/02/20210726_173153_001.jpg?resize=450%2C600&ssl=1)
![1953 International Mustang II](https://i0.wp.com/welderseries.com/wp-content/uploads/2010/02/20210726_173116.jpg?resize=450%2C600&ssl=1)
![](https://i0.wp.com/welderseries.com/wp-content/uploads/2010/02/IMG_3872.jpg?resize=800%2C533&ssl=1)
![](https://i0.wp.com/welderseries.com/wp-content/uploads/2010/02/IMG_3881.jpg?resize=800%2C533&ssl=1)
![](https://i0.wp.com/welderseries.com/wp-content/uploads/2010/02/IMG_4115.jpg?resize=800%2C533&ssl=1)
![](https://i0.wp.com/welderseries.com/wp-content/uploads/2010/02/IMG_4116.jpg?resize=800%2C533&ssl=1)
If you’ve put our in something “weird”, please send us some pictures!