Back in the mid and late 90's I fell for that, "Awesome piece for a great price!" Bottom line I got what I paid for, and that was a bunch of junk. I personally have used B&M, TCI, GER, BTE, Neal Chance, and Yank converters. I have only used the Yank product in the GOAT, and after having to send it back to get restalled, I am now happy with it.
My first choice was Neil Chance or BTE, but they unfortunately don’t sell torque converters for the 4L65E. Nothing against Yank, but I have had great success with Chance and BTE. Anything and everything I bought from those two company’s (Chance and BTE) have never had any issues what so ever, and went through allot of abuse.
In other vehicles I have owned I have eaten allot of $$$$ when dealing with that converter for a great price deal. I CAN TELL YOU THIS THOUGH.... After replacing converter after converter and tranny after tranny out of another vehicle I had, I did what so many others did right the first time. Called Marty or the guys at BTE and had dropped some big $$$$ for a product that was yes, very expensive, but worked beyond expectations. Fact is there is allot of people out there that have no idea what a good and correct torque converter feels like. And given that the torque converter is more important than allot of other factors when it comes to getting power to the ground, why cut the corner and gamble?