You might want to look at my posts regarding the 392 hemi and 545RFE. I've posted pictures they're out there somewhere. I went with a Buchillion package, probably what you've looked at, but if I was doing it again I'd talk to Pace Performance, Johnny seems to be quite knowledgeable. You might want to talk to Chris at HotWire HotwireAuto - Fuel Injected Wiring Harnesses .