Meh, if you want a cheaper darn near bullet proof 6 speed auto go find yourself a 6L90 from a late model GM truck and not monkey with that aftermarket stuff. The 6L90’s aren’t quite an Allison but they are holding up a lot better than any 4L80E ever could. Ask any GM dealer how many warranty repairs they have done on 4L80E's vs. 6L90’s. 6L90 failures of any sort are very few and far between. If I had to have an auto, a 6L90 would be what I would go after but until both of my legs fall off I'll stick with manual transmissions.
