I guess initially I'm concerned with the body differences. I know the tail panel, fenders and quarters are different. Wondering what the differences in floor pans, trunk pan, bracing, inner fenders, cowl, firewall...ect. That kind of stuff. Wondering sheet metal wise what I would need to replace to make it a "correct " 70. Also wondering if the inner body structures are the same, thus allowing 70 quarters, inner fenders, tail panel, ect to be welded to the tub.