hi , i have a 01 tt 225. i need a new tranny and started my search and found out that there are 2 6spd quattro transmissions . there is a dqb code and a fhb code. my car is the 225 version and has the rare dqb code tranny. my question is what are the differences between the dqb and fhb transmissions??? i found that getting the fhb tranny is easier and cheaper but my car originally came with dqb. will the fhb tranny work?