Called this tranny shop today to find out some info and when the techs there heard I had twins they told me I should put a turbo400 tranny and dump the crap that's in it. They said they custom built a twin turbo qc 10 and did away with the 48re and installed 400 turbo tranny and held up with absolutely no problems. Anyone ever heard of this being done or know for a fact that that tranny will hold up better than the 48re?