I recently purchased a used 4R100 from a salvage yard that came out of a 99 "Ford Econo RV Cutaway S/Duty", (according to the VIN and carfax). I have a 2000 F-350 Crew Cab SD. When I recieved the transmission from the yard, I noticed that it had a torque converter with 4 studs and mine has 6 studs. Other than the torque converter difference is there any other differences in the performance of this transmission behind a 7.3 powerstroke?