I have seen a 1950 Chevy pickup put on a mid seventies chassis. The 66 cab on a 92 frame should be easier just measure the width length and height differences to see if any shims need to be made. ( the 50 pickup used short lengths of pipe to accommodate height differences) These were used at the mounting points of course. If you are trying to get front disc brakes a 71 or 72 front suspension should bolt right on to the 66, besides if you have the coil springs already it is the best ride you can get. If you just need a rebuild on all of your components my opinion is that the 66 has a much better frame and suspension.
Maxbox 12
Could be a bad ignition switch....
with rivets
1, 8, 4, 3, 6, 5, 7, 2.
the nut is in the frame the nut is in the frame
the front frame horns are different
Yes.
Try an auto parts store that specialises in 4 wheel drive equipment.
under the front bumper just above the license plate.
yes
It has a full perimeter frame.
A direct bolt in replacement, the 1966 would work. After that nothing would be a direct bolt in with out fabrication.