Since Hesco makes the Mopar MPI kit, I think that they would be a great place to have the install done. I know that they were really helpful to me when I would call them with a question when I was installing mine. The pinging problem that was discussed in another thread is one potential problem. My biggest problem is the the throttle is really touchy. You touch the gas pedal, you jump. It makes controlling the throttle a little tough when I'm trying to creep over something.
'86 CJ7, 258 w/Mopar MPI, 4.56 gears, rear Detroit/front Truetrac, full cage, OBA, 8274, 4" lift via Alcans/Rancho, 35's on beadlocks, other stuff. Built for rocks, mud is a four letter word.