I made a mistake earlier asking about SLP exhaust options package, it's actually a SPL exhaust. Also included is a hurst shifter, all ona 2002 z28. Can anyone shed some light on this, is this an options package, and what exactly is a SPL 3" exhaust???

Well, you were right the first time, it's SLP. It stands for Street Legal Performance. SLP offered two exhausts on 2002 Z28's, their dual-dual and their CME exhausts. The dual-dual featured dual three inch tips on either side of the car. The CME (center-mounted exhaust) included a rear valence kit that made the two exhaust tips blend in with the bumper.

Dual-dual
http://www.stealthperf.com/store/images/items/31029.jpg
http://www.stealthperf.com/cgi-bin/store/31029.html

CME
http://www.fbodyaddict.com/photos/get-photo.asp?photoid=5

that's right