The assembly extreme is what i want but dont need.Thats a start for me.So my hp that i want , the trany will except it with no problem i hope.I looks like its a whole new trany to me .Or do they build mine.?I do have an allison guy here in my area that i am gonna use .Thanks again for the info.Just open the wallett and spend more i guess.But its fun to do and know that the confidence is there with out having to worry if something is gonna tear up.