You can't make an "internal" assesment of the frame rails unless you have the floor pans off of the car by the firewall. Your only option if you don't want to dissassemble everything is look it over as best as you can looking inside, using bumper bracket holes and stuff on the outside and guess what kind of condition the inside is in.
Use a welding clamp or vise grips and go down the frame rails from the radiator support to the firewall and clamp as hard as you can without damaging the rail. This should give you a good, but not conclusive idea of the structural integrity of the metal.
At least that's how I would get a quick look at it.
__________________ "yeah though I walk through the valley of the shadow of rice, I will fear no turbo for torque art with me. Thy rods and thy crankshaft, they comfort me."
1965 Fastback 289 hi-po 3sp.
1973 coupe 302 4V auto. -SOLD
1994 GT 'Vert |