Is it possible to swap a NV3500 5spd (thats what I have now) for a 5spd out of a 2500/3500 truck with a NV4500? Would this be a pretty much bolt up swap or are they different lengths or bolt patterns? Has anyone done this lately? The reason I would even be thinking about this is because I already swapped in D60's and 5.13's. I am about to swap out the t-case for a JB conversions NV231HD (the one with 32 spine output shaft and 6 planetary gear and wider chain set up). I will also have a new rear driveshaft with 1350 CV and 1410 axle joints. So really the last peice to upgrade drivetrain wise is the tranny. Or do you think this is really not needed at all and the NV3500 will hold up just fine?