You asked for it...here is my worthless opinion.
73-74 grilles look the best (Chevy or GMC)
1980 has got to be the worst square body front end ever!
early aluminum trim (black or yellow) looks better than the simple plastic trim
86-87 are great picks for fuel injection and 4 speed auto trans
85-86 front ends look good too
4x4 sh-t is about the same throughout the years
3/4 ton is mas macho to 1/2
Now if you could build a 73 3/4 ton 4x4 Gentleman Jim........