440 into 67' barracuda Formula S

Build it how you want.

Subframe connectors at least, get a torque strap to tie the motor the the frame rail, or better yet a motor plate, ss springs, and run at least a 3.91 gear set.

If it were mine I would do fenderwell headers and a full cage with a big block.

Nobody's paying Jack smack for "rare" cars now days so break out the torches and have some fun at the track.

Just playin'.

My buddy runs a hot 340 formula-S at the track every now and then with no radical mods other than ss springs, 3.91 gears, sub frame connectors, a ratchet shifter and headers.