I'm with you as long as there built right, the problem is over the yrs I have seen quite a few FI Vipers built by a few different shops and they all had plenty of other "problems" even when the motor was sound. From fuel leaks, to bad fuel small ******* threw the braided lines, to oil leaks (lots of them), problems with oil scavenge pumps, and even gravid drain problems. To things like drive ability problems to drive line problems from too much power. And most of the gen 2 FI cars are pledged with overheating problems at least around here were it can reach 110+ deg in the summer.
I have a heads/cam/paxton 2001 thats making over 900 rwhp that has been totally reliable for the last 2 yrs with FI, and was totally reliable for 5 yrs before that as a heads/cam car making 612 rwhp. But I built it my self and did not cheep out on anything that I thought to be required to make the car not only powerful but reliable. But I also did not go overboard and do things that are not necessary.
That being said there are times I think of removing the Paxton and just going back to being a heads/cam car just because frankly 600 rwhp is more "usable" then 900 rwhp is on the street. Even with 345/30R18 MT drags 1st and 2ng gear are useless. I think when my car was the best as a all around car was when it was a heads/cam car sure it was no were near as fast but all around it was "better". But maby I'm just getting old because there are times I have even thought about putting the stock creampuff cam back in it to have it drive totaly like a stock car only faster