Dear Welder Series…
I have purchased your Mustang II Crossmember kit for my 1948 Ford Tudor sedan. I’m using the factory X-frame, at the front section where I am to install the crossmember there are the original frame holes. My question is do I have to box in the frame rails or can I plug weld to fill the holes? I’ve attached a picture of my frame. Where the rubber stops are located is where the holes are inside of the frame rails. The frame is already “boxed”.
The frame was  upside down when taken.
Please let me know.
Thank you,
Tony

Dear Tony…
Tony, we just cut out some circles and filled the holes in the stock boxing plates.

Good question.