My buddy just bought a '97 T/A WS6. We were talking tonight, and neither of us knew for sure if WS6 modifiications were done in-house at GM, or if SLP did the job. As far as I knew, SLP only did the Firehawks, but since the WS6's were basically identical to Camaro SSs (and came back the same year, too) it would also make sense if they were built by SLP. Can somebody fill me in? Thanks.

 

Yes SLP..

From 98 up it was ASC / GM in house.