if you race and have mucho denaro in racing equipment, it may be worth it. I like my 4l80e, but it is the stock version that sits in a 91 2500V subruban. I dont know how many horses she'll handle but she is tough. It is the 4 speed version incl OD and it has lockup converter. I'd just as well go to a salvage yard and pick up one of these for much cheaper but make sure you bring along the computer that controls it.