Dave, these seem to be excellent transmissions and came in a number of cars including Camaros, Firebirds, GTOs, Cadillac CTS-V (Yes Cadillac!) and also Dodge Vipers. So you can find them in wrecking yards if you don't want to spring for a new one. A friend of mine has one in his 68 Camaro with the new LS7. He gets 20+ MPG on the highway with it, plus has a great time with those nice low gears.

Pat