12 hours ago, datzenmike said:
In no order I would...
1/ Replace the rims with proper off set ones and lower slightly more. Run narrower tires on the front and wider on the back.
2/ Swap one of the KA engines in with it's 5 speed.
3/ It should have the 4.11 but may have the optional 4.375 differential so find out. For the KA the 4.11 would be best.
4/ Roll pan between the rear lights.
5/ Swap the later and larger 720 or D21 front calipers and vented rotors and a 15/16" master cylinder. If you like over kill get the VG30 calipers.
6/ A 2 1/4" exhaust pipe and large turbo muffler, nothing you can look through end to end. No 'fart cannon' and use a resonator.
7/ The regular cab poses a problem fitting bucket seats. They would need to be thin front to back. Nice black carpeting and door cards.
8/ HEI projector style headlamps. Has to be projector and not a 'conversion'.
9/ Get rid of that horrible '78-'79 grill, they are the worst, and replace with a '73-'77 one.
10/ If no optional sway bar, get one.
11/ New shock absorbers, replace all bushings with new rubber ones, not poly, replace all suspension and steering ball joints.
12/ Do you have the '79 only tan dash and interior? that matches the brown paint? Probably cracked so I'd replace it. Black is fine.
13/ Paint it black.
14/ put earlier 521 twin rear bumperettes on. The 620 had similar ones but may have been an option as most had the worst looking dealer installed crap.
15/ Move the tail gate handles to the inside of the box.
16/ Install electric power steering.
Do you have any recommendations for wheels?