I'm running about 150HPR with the FiTech unit good for 200-400Hpr. Now they offer a smaller two-barrel size. I would have used that one if it were available at the time.
Be aware, upgrading to EFI can take some work: fuel pump, O2 sensor, temp sensor, fuel pumbing... it's easier to buy a good carb. But you have to tune the carb (or have someone do it.)
