Which Tranny? Quick q

HP Addiction

Founding Member
Jun 14, 2002
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Long Island
Got a quick tranny question. I'm getting a tri-ax for a good friend, but his car is an 01. I know some of the 01's got the t-45 and the others the tr-3650. How can I tell which tranny he has. Dont know if this helps but I noticed that he has the newer style waterpump pulley. Dont know if their is a connection though. THANKS.