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There are definitely kits to do that. I don't know how good they are, and they'll most likely void your warranty, but there should be a way to do it right. The good thing is that the GXP has the LS3 V8, which the factory supercharged LS9 is based on, so it's a tough engine and should handle a...

There are definitely kits to do that. I don't know how good they are, and they'll most likely void your warranty, but there should be a way to do it right. The good thing is that the GXP has the LS3 V8, which the factory supercharged LS9 is based on, so it's a tough engine and should handle a...