I do have a KM132 in my back yard, problem is I dont want to convert my auto truck to a manual, and I also heard that the 4g63 was available both in wideblock form and narrowblock forms. I read on another forum that the bearings in a km132 will not handle the stress of a 4g63, and that the auto tranny is a much stronger transmission and won't be prone to failures and can stand up to something like 400-500 horsepower, athough I would be happy if I even got 140 horsepower vs the 80-90 my g54b outputs. I have heard people say that the km132 usually lasts 6-12 months of moderate/hard driving before the bearings fail, but I have never experienced it first hand.