Doors are split 73-76 for the early non-power design, and 77-91 for the power design. The outside skin is the same, inside is different. Stalks for the manual doors are longer on the 77-91 and they have provisions for the power motor. If you get a complete door with all the hardware installed for a donor it will bolt to any truck. If you start mis-matching you run into problems.
73-76 door
77-91 door
Fenders are split 73-80 and 81-91. Unless you get a complete front clip fenders will not swap. 73-80 clips will bolt to any model without modification, BUT 81-91 clips will only bolt to 81-91's. To get the newer clip on the 73-80 you must cut the cowl area so the newer style hinges will bolt up/mount
Chris Lucas
www.73-87chevytrucks.com
www.captkaoscustoms.com
Project Su
Jimmy 2WD Project