W3Z3 is almost the same as W3Z2, the sought after 93 PCM. They made some "driveablity" changes to the Z2. Not sure what they changed but I have a Z3 in my 93 and several other mark owners have commented on the way the car runs.

http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&item=270620274678&ssPageName=ADME:X:RTQ:MOTORS:1123

I have one on the shelf and one in my 93 ... if you read the Q & As ... it's a W3Z3 not a W3Z2

I have one on the shelf and one in my 93 ... if you read the Q & As ... it's a W3Z3 not a W3Z2

I'm the one who asked the question.