Hey guys. I bought my 01 ram 2500 bout 7 months ago its my first. The guy told me there was a problem with the 4wd but that all it needed was the front drive shaft. I did some looking and found that wouldn't be too expensive so I got him to knock some off the price of the truck. Well I got the truck home and started doing my homework and found out it has a 231hd tcase behind the 47 re. The front output shaft on the case is different than the 241 cases. The 231 doesn't use the double cardan joint. So there is at least 1 cummins with a 231 behind it. Question I have is if I buy a 23 spline 241 case will it bolt right up to my 47re. Thanks for the help By the way I don't know if that 231 came factory or was installed by someone else.