I bought a few trans parts for my 2007 Cummins 2500 to just make it more reliable and live longer, I bought the truck used and was not having any history on the truck I wanted to see if I could get it to shift a little better without pulling the trans and doing a major overhaul. I bought their Billet Governor pressure solenoid GM conversion unit, pressure transducer, and their trans pan for my 48re. I waited till I got all the parts at once to service the transmission, and man what a difference it's just like a brand new transmission, I just followed the simple instructions, adjusted the front band, poured in the new fluid to the proper level and test drove it. The transmission was searching for second gear during light throttle before the changes. These couple changes in the transmission made a world of difference plus the transmission pan is just plain cool!