Will a 1976 Corvette C3 Hood fit on a 1978 Corvette C3.
yes they will
Yes, the headlights should be completely identical.
will a 1985 corvette hood fit a 1993 corvette
No, the 1974 Corvette frame is NOT the same as a 1975 Corvette frame. I have had customers modify it to fit, but you would have to change the rear kick up or adapt a 75 and above rear bumper assembly to make it work.
yes it will fit