Quote Originally Posted by Fivefingerdeathpunch View Post
buick, pontiac, and chevy all had the same motor and supercharger.

BUT in 04+ they got bigger for pontiac and buick stopped making the SC motors.

Not QUITE true... there are some mild differences between them, I found this out putting a SII L67 from a Bonnie in my GTP... notice the differences, nothing major, but still a difference...

From the Bonnie -


Old One From My GTP -


There is a little Tee, you can just cap it off, but its still there. Just some misc. useless info to have. They bolt up the same, blow the same, but they are in fact different