i have bought 3 converters for different applications from brian phaze at bdr converters, a little shop around buffalo ny and all three have been spot on and have worked flawlessly. he builds all converters to the customers car and engine specs. I just ordered another one for my new 565 bbc combo only took him a week. 2900 lb car and its a 9.5 inch conveter.

Bdr torque converters
Brian Phaze
1-716-200-7632