Quote: 88-93 would be my perfered years... here is why 1 88 start of the Cummins... 2 fuel injection on gas trucks. 3 NP241 on gas trucks NP205 on Cummins and 1 ton trucks... Body parts exchange on 81-93 trucks Less the 91-3 rad supports... 5 727 88 / A518 89up trans Cheep if needed rebuilds 6 Dana 60 fronts on CTD and most 1 tons... must have np205 gear drive transfer... 7 full door panels and headliners and trim, on most upgraded models.. * fuse box that don't melt or catch fire like on 76-80 trucks... 9 Not full time4x4... 72-80 trucks...