74 air ride build

[AspecialZ]

So...after flipping back and forth, I'm going to put my 74 on air. Current plans after tearing it back down this past weekend are to Z the front frame then do a traditional 4 link in the rear. Now that its tore down my head is spinning on what to do to "update" the performance and style of this truck. I have a 383/350 built motor and trans that I think I would like to sell and replace with a 6.0 and 4l80 setup. Under dash electric A/C/Heat setup. Smooth the firewall and custom rolled inner fenders. Any opinions or comments please let me know. I'll take any knowledge that I can pickup!