id talk to the people that i was getting it from and tell them what you're gonna run. far as the vac. goes on EFI systems low vac. = richer. im not sure you can buy something now that you can add a lot of blower later,( without buying new stuff). thats a big jump. talk to the man thats gonna build your system. its gonna work great on the reg. motor, the blower is where you need help.