As you might remember, we were left unfulfilled by the 2012 Buick Regal GS. Buick just didn't go far enough, in our estimation, which is why when we read about the possibility of a tuner version of the GS from SLP Performance Parts on Inside Line, we got on the phone posthaste. SLP is best known for building the Firehawk and SS versions of fourth-generation F-body Pontiac Firebirds and Chevrolet Camaros for General Motors, and owning the "ZL" trademark that both it and GM have used on the current-gen Camaro.
Autoblog, SLP says it is developing new GNX and Grand National Buicks