I just ordered a dual exhaust (bolt on) kit for my 77 highboy, and a set of wheels and tires.
2.25" dual exhaust from manifolds back.
A pair of USA made turbo mufflers to go with the pipes.
4 of these, 16x8.5" with -6mm offset
And 4 of these in a 35" tire 315/75R16 hankook dynapro M/T
I'll update once I get this stuff bolted on.
Then after I finish my roadrunner I'll come back to this truck this summer yet and post updates of the repaint and any other changes i do before the snow flies this fall.