I got mine rebuilt from Autozone (I wouldn't normally do this, but i did work there and got quite the discount) when I had the tranny shop install it, they said how well it had been put together and that everything was new and updated. I think they cost about 1000 bucks from there and have a 1yr unlimited milage warranty. Anyway, the company that builds them for AZ is Mid-west Transmissions. They did a great job and I am very happy with it. They even used that REALLY expensive gasket sticky stuff to seal the case.