I did my quarters like you are doing them back in 83. I'm cutting them out and putting in full qtrs this time. Too much bondo and the rear end was too wide so the bumper went around it but you could mount the brace. I will put some pics up soon. It's totally gutted except steel dash. Left the windows on to keep the body from twisting.

I will have to replace: both qtrs, inner & outer rear wheelhouses, front inner fenders, full floor & trunk pan with frame, LH full rocker, LH full cowl, firewall, upper cowl, floor ext to firewall, trunk lid and beef up the frame mounts. Doors, 400 hood and fenders are good.

Looking forward to the project just don't know if I can afford it!

You think the Yearone guys want a real beater to fix?