That's really a tough one, because injector impedence has to be matched to whichever ECM you're using. Injectors(usually) have power anytime the IGN. is "on" and the computer grounds them, if the resistance is wrong, POOF goes the computer. Your probly looking at something in the 50 lb/hr range, but without more info on your engine that may be bad info. AZ speed and marine know a whole hell of alot more than me, and they will surely taylor a system to fit your needs.
fog