I was told by the last owner(fordsux826) that the tranny was built by John Goebel, I did some research and he's know for building some pretty awesome Drag Racing transmissions here in Texas. Cory wasn't specific but he said that it has Heavy Duty clutch packs (Kelvar I think, but I'm no expert), valve body work (shifts firm), and a Higher stall Billet Converter ( I can tell it is there). He told me the converter was also built by John. I have no idea in the engine other than whats in the first post. All we have done for the few months that we've had it is drive it, and fix little things like faded trim from 98.