You can do like the other guy said if you have that kind of money. Or you can buy a rebuilt crate transmission from a parts store. The used transmissions you can get at salvage yards sometimes turn out to be junk and some of them don't even honor their warranty. Plus if you get a used trans. from a bone-yard and it turns out to be bad you end up having to pay for the removal and installation again with a different used transmission. The choice is yours.