These transmissions are based on the Borg Warner T45. I liked the T45 very much. I personally like the new cases cast for it and I am sure the internals are new as well. What I don't like is the geometry error produced by the offset shifter, which if you know your math, you will have. This is a carry over from the typical TKO style conversions. To me if you are going to the trouble of recasting a complete case you might as well make the shifter on the side, but typically the engineering talent isn't there. If it was, it would be done. Most people just get locked into copying all the geometry of the original unit and why bother? The other thing that scares me about these T5 ( Mcleod ) and T45 ( Keisler, or Legend) is the abiltiy to get service parts in the future.