The transaxle identification code can be found on the VIN tag found on the driver's door. It will be under the "TR" section on the lower right hand corner (1986-1997) or near the middle (1998-2006). 1986-1995 models will have a 5 letter code while 1996-2006 models will have a single letter code. An example of both style VIN tags are shown below.

VIN Tag Sticker