4V or 2V? you are looking at adding a huge amount of weight onto the frame over 550 lbs vs 450 for a 302, are you boxing up the front frame to accept this and the added torque that will be added to the area?
I haven't done a cleveland swap, so i am not sure as the problems you are about to encounter. I know of the worms I have in a 302 swap. I would guess thinking about your exhaust sounds is so far from your worries that I wouldn't even be dreaming beyond how to get the motor mounts to line up properly.
As for go faster goodies... all depends on how deep your pockets are; and google with bench specs can be your friend or curse....