1. Wiring will suck no matter what. I am thinking that I will pull the whole bulkhead harness and use a USDM turbo legacy harness, including rewiring the engine...
2. You can use your tranny until you do an AWD conversion. Subaru's are like Legos.
3 Walbro 255l fuel pump runs less than $100 and drops right in
4. Get me the other numbers off the plate on your turbo and I will tell you what car it came out of. And what color is your intercooler?