So far, everyone I know has switched everything back to the carb setup. I don't know why, it seems like just as much work for less performance.
As far as I know, I'm the first one to try the fuel injection, there's another guy not quite as far along as I who's keeping his fuel injection, he's in AZ. He had his wiring modified by Fuel Injection Technologies, it cost him more but I think it would almost be worth it. I sent mine in mid December to a company in California called Dynatech, every time I would call them I would get a answering machine. I must have left fifteen messages and never got a call back. Finally I got ahold of them yesterday and they said they would send it out today and gave me a tracking number. I wouldn't use them, actually, if I were you, I'd learn to do it yourself since you have the complete wiring and not just the engine harness. I don't think it would be too hard.
I should have mine running in a week or so, I'll let you know how I like it.
Most of the info I have is cherokee related so I'm afraid I'm of no help till I can tell you how it performs.
By the way, that's probably a 4L60E if it was mated to the 3.4, not a 700R4