Don't use this company! In Sept 2018 my engine builder ordered a custom 6L80E transmission with a very expensive billet intermediate shaft designed to handle 2x the standard GM rated specs. It was for a very high end show car with a super charged LS3 engine. When installed it would not shift. We spent months and thousands trying to figure it out, even sending it back. When we got it back a second time it still did not run. We finally got it running after (Bob) suggested it may have the wrong valve body! We replaced it and the techm but he never paid us for the parts. When it started leaking fluid after less than 2K miles we ended up taking it apart ourselves. What we found was nothing more than a standard GM transmission build with high mileage used parts.....and no billet shaft. Bob's response: "You ran it dry and opened it so the warranty is void". These pictures are from a nationally recognized professional who does nothing but build and repair 6L80E transmissions. Now I am paying to have it rebuilt correctly all over again by a competent transmission professional. Call or email for more details. Paul Tusini 978 239-0707. tusinip@gmail.com read more