1st post: I am considering buying a Bj60 here in town, Bend, Oregon, and it has a blown rear end which is described to me as a 34mm 4 speed, and it is attached to a 3b. That sounds incredibly newb, but whatever just trying to paw my way through this stuff. I am guessing rear end housing is 34mm and the tranny is a 4speed. I don't know what the code is for the tranny or transfer case or even what the gear ratios are! So a little help guiding me to a link would be great. This is a previous Canadian vehicle imported into the US with about 300, 000 km, so it seems to be relatively low mileage. What are my rear end options with this, the owner seems to think that no gas rear-end (read U.S. models) will fit. I have been wanting to run a biodiesel wheeler for years and an oppurtunity has come up, just have to replace the rear end, thanks. Edit: Okay, so most likely it has a blown H41 4 SP. Would it be better to replace the tranny and rear end from an H55?