the names TCI and B&M used to mean something, not anymore IMO. I had a holeshot converter that was so far out of spec from one end to the other I could not even bolt it up. B&M tech line recommended I take it to a lathe shop and have some material removed, tried that and it could not even be spun up. Find someone local who rebuilds trannies, and your looking somone in the eye when/if yolu have a problem. No phone call, no reshipping, walk in and see the man. After the holeshot dilema I went with a Trans Specilities unit TC, heard good things on Coan, and BTE as well.