Help me complete my build.

Ok I guess I should clarify as few details. The car has disc brake on all four corners (wilwoods) It's mini-tubbed too. I plan on using the 8.75 until is brakes.. not wanting to spend the cash on any else right now. The car is/will have a molly cage in it tied to my frame connectors and torque boxed in place. The Cr is already set to 11:1 and with the alumn heads I'm shooting for pump gas. The Transmission is a whole other debate in it's self.. IF I use a 727 it will have a 9.5" convertor that I can use on the street most likey stall to 3500-4000 with it. I'm looking real hard at a GM trans at the moment though 200R4 or 4l80, both with trans brakes and full manual.