I heard very good reviews from the getrag, easier to rebuild for the home mechanic too. I do now it leaks and needs to be overfilled to last longer and that is why I was using the zf but this one comes with everything on it and the times I've driven it it feels just fine not butter like My zf but no grinding either.
I love the IDI, but I can't stay too long with out a project and have looked at this engines for some time studying all I could about them. They sure are fun to play with.
I feel grateful for guys like Mel that put out of their own time and money to develop new things for our engines like He does.
I wish there was a cummins conversion forum on this web site, I spend most of My time just checking new posts and there are so many guys doing this kind and other engines swap it wold be cool to be able to discuss all this on the same web site, this forum can't get much better than it already is but a new engine swap forum would be appreciated.