Best deal on a 904?

I got a couple quote from the local shops today. One said 1800 for a rebuild with a stock converter with a 3yr 36k mile warranty and the other said 675 with a stock converter 1yr 12k warranty.

I wanted to try/attempt and do it myself but have never dug into one before.

I was near bout fixin to say you were a hit and run and they should lock this thread. Nice of you to show up.