I doubt that your doors have the dreaded crash beams that Drag racers hate and love to remove, but just about the only thing that can be of significant weight loss on stock doors is the CAREFUL drilling of dead zones in the inner metal skin or milling out of existing access holes on the inner skin. Also some material can be removed from the regulator window crank arms.This will take off more or less about 2-4 Lbs each door. Lightweight fasteners where ever safely possible. One can chemically mill the whole door as well for more savings, but if they are to function like stock, I'm afraid one can't mill too much off to be worth the expense. Personally, If the doors were for my car, I would chemically mill even if it was only 10%-20% off.
Later this evening I'll post up Palm Readers meticulous drill out of his 68' doors that look stock even if they are hidden from the eye with the inner door panels. It wasn't much, but it all adds up.
