i know this is kinda late on posting this but brad in bartlesville built my allison on my old lmm and its been a year and still performing quite well he used some clutch kit i never heard of but the truck is still running great the guy who has it now is running a 300 horse tune on it. he is going to be doing my stage 5 kit when i get it it. he is the only guy i know of around here that will even touch them.. now motor wise i do alot of that work myself. but there is a duramax performance shop in broken arrow