74 Swinger Project

Mostly ridiculous question of the day. See I got this 408 stroker that I planned on sticking in my Demon. My buddy keeps telling me to shove a 440 in it. The 74 car has a tire burner in it as it is with a 360 that is no slouch. 8 1/4 rear would have to go, but the 904 is built and would bolt right up. I did not do a real good job on the engine bay when I built it. Winter project....motor swap, grill repaint, tail panel refurb, engine bay detail?