1969 D100 Pickup Exhaust question

I installed a bone stock 73 lo-compression 318 into my son's 84, with an A904 that I built, with a 2800 convertor, 3.55s , and a ThermoQuad 4-bbl.
She had an oil-burning 360/727 that is now taking up space in my garage.
That 84 went from being an Azz-draging pos pick-up, to hot rod in two days. Fresh 318 for the win!