I agree, you need to ahev someone with no skin in the game inspect it as much of what you want to check isn't visible from the pictures. You want to hav eot checked around the rear suspension and radius arm mounts to the body. Rockers, inner and out for covered rust or poor repairs. Same for the rear wheel arches that are double skinned on a coupe and the boot floor where the gas tank and spare are. Moving foreward, footwells, the mounts to the body for the subframes. The subrames themselves for bent tubes and cracked brazing. Bonnet hinge points and bonnet belly pan.
There's also mechanical condition, oil pressure hot, running temperature, do things seem to have fresh oil on the outside indicating possible seal or gasket leaks, condition of wheel and hub splines and spokes. Do all the gauges work, does the steering feel tight, transmission feel precise when shifting and doesn't pop out of gear.
This not a complete list of things to check, but it's a good start.