I agree with the dealer about rebuilding a blown tranny. Those difficult to do right because you have to clean it out COMPLETELY! The trick is to rebuild the tranny JUST BEFORE it blows…. Good luck with that .

I would ether buy a low mileage used tranny to use as is, or buy high mileage used tranny and have it rebuild.

I read through the 5sp swap procedure and it is not for everyone.