GM "Stage" kit for Regal and GS!


New Member
GM has a "Stage kit that is supposed to increase horsepower while keeping the warrantee intact. GM part # 12653664. It comes with a new air cleaner housing and Tune straight from GM. If the parts department doesn't see it tell them to update the catalog. I purchased mine for $625.00 but it depends on the dealer. Some places are 595 and others into the 700s.

There was someone who had a GS and did a Dyno test and had about 250 at the wheels. That's about 295 at the crank using Front Wheel drive with 5 speed conversion from wheel to crank. They have 6 speeds so it might be even higher at the crank. It really is worth the money.