Just trying to figure out how to make the front not move might put a imp frame on it and run it at the local fair they never look at cars or look at frames they just check for the battery and gas tank so I might do a frame swap
It will just bend behind a-arm with to much stuffed in front of a-arms. Bumper selection, bumper height placement on front of y’s is very critical and a motor that stays running is more important than stuffing and welding. But thats just my $.02. Have only built and ran like 15 of them. But cars down here are pretty solid. Not as much rust as the farther north cars are.
If you stuff the front you can plate behind the a arms then it won’t bend behind the a arms I’ll prob run a soft bumper up front but I’ll fill the frame a local fair the inspectors don’t look under cars so I know a couple of guys that do it and get away with it