71 lemans sport

i have a 71 lemans sport hardtop body is shot no interior was an ac car has perfect frame with disc brakes and power steering good windsheild and rear glass
nom engine in it from a 78 transam its a 400 and turbo 350 tranny good for parts email if intrested panshovle@yahoo its on long island i have the papers for it.

Have a 71 gto and the core support bushings holes are shot. My question is if when having it repaired with metal plates how critical is the thickness. I'm wondering how it will effect overall height when its time to install fenders. Other question is since holes were so shot what is proper location when drilling new holes.