I'm looking to purchase a set of 3:73's for my '01 WS6 A4 Stock 10 bolt. It currently has 3:23's in it. How can I tell, without taking it apart which series carrier I have. Was there a standard series for my model? Lemme know if you guys can help. thanks!

Also might as well ask too what channel rear do I have... abs but no tcs... 3 channel right?

 

3.23s'=3 series
ABS only= 3 channel

 

Thank you very much!