IMHO, The Getrag isn't all that bad of a transmission. It's built pretty heavy, actually. Although the problem with the bearing failures are common, it seems that Getrag didn't have enough oil in the case of the transmission to give the front bearing enough lube. The way to solve this is to 'overfill' the transmission by 1 quart. I had read about this in a Chrysler service bulletin a few years ago. I did this to mine, and haven't had a problem. I did have to have mine rebuilt at 150K miles, but only because one of the countershaft bearings was 'squeaking'. This is one of the bearings that is always submersed in oil too. The rest of the transmission internals looked to be in great shape. In 1993, the NV4500 was used on HD trucks with gas engines, and the Getrag on Cummins equipped trucks. Looking over my manual, the NV4500 doesn;t look to be as heavy of transmission as the Getrag is.