And as Dartfreak spoke of, sometimes cost is a factor. In general, if you pay less than 600 bucks for a converter, you didn't buy "a good one". A real nice 9.5 street converter starts at 750 bucks and many will get you 900. I said a good one. If you have a transbrake, or NOS, or turbo, you'll be on the North side of a 1000. Now I happen to have 7 classic vehicles. If somebody wants to pay the low end of 5000 dollars to put a quality converter in each of them, get me your credit card and I'll get to ordering today. Then, when I motor swap, cam swap, gear swap, I'll be HAPPY to send them back in on your dime and run up another 3k on your card :) Oh, my grey '89 van has a TCI tranny and a Hughes converter in it, I didn't buy either one ... LOL.