I had a stock 46rh converter to compare to my aftermarket one, the difference was in the stator drive tube where it met the body of the converter. On mine the drive tube area was flat where it met the body, on the stock converter, the area where the tube met the converter body was about 1/8" "deeper". All other dimensions were the same. I had mocked mine up with just the trans case, front pump and converter on the back of the engine to see if there was any clearance. Glad I did that....