So i put a new Fitech EFI on my 71z, So far i love it, I don't miss my carb at all. Install was easy only took one day, hardest part being the o2 sensor install. I have a scarab swap kit, So i was a little tight on space. JTR kit will be an easier install i would think with motor pushed back more then the scarab kit, giving you more room to mount the fuel commander. Paid $1300 bucks for everything, a pretty sweet deal in my opinion.