I have been following this thread for a few days now and I figure I should now input my two cents.
My 1969 Bronco has the Fitech fuel injection system. It was easy to install and tune and the self learning feature got me about 75% there. The biggest problem I had was RFI from the brand new Taylor spark plug wires. This drove me nuts as it would shut down the engine like turning the key off then on again followed by a big backfire. One of the reasons I bought this system is that the company is located just a few miles from me. This turned out to be a huge blessing as they helped me diagnose the RFI problem in person. They even lent me a set of wires for testing. I am running an in tank pump and a return line back to the tank. So far I really like how it runs mostly like a modern car.
I am now considering installing the same system in my pantera. The thing that is holding me back somewhat is that I would have to run an external pump. I have read many problems with external pumps so I am a little reluctant to mess up a very reliable car.
Just my 2 Cents