I know that on my '72 manual on page 2-7 under 'Frame' for that all '72 chebbys....that the drawings shown should be the spot on referance for the frame as the car sits assembled....on the end of the welded frame, not any side cheeks or other parts, but the forward frame rails themselves...the lower edge to ground is 14.375 inches....the rear thwart the bumpers mounted to is 23.5 inches to ground from the lower edge....
I feel any referances to the body over this period of time since built is bogus due to many collisions, and crazy crap happening to various bodies...rust, whatever....so if the FRAME measures are correct, that's IT...the body can be whatever one chooses....
course any suspension mods will alter the FRAME measures and obviously the body also....
measure of fender height is bogus....without knowing FRAME first...
:beer: