Headers - Schumacher conversion headers. Had to do some minor fab ing to reroute the drivers collector to clear the clutch z bar.
Bell housing - It comes with two different size centering rings, I think mine took the smaller one. I took the input collar to my friends machine shop and he polished the down OD of the collar so it fit cleanly in the adapter ring.
Rear - 3.91 with sure grip.
Let me know if you need any other info.