Welcome! Who really has the willpower to keep it "all stock"?
I was looking at a '06 GXP in Black Cherry Metallic a couple of weeks ago. Thank goodness someone bought it before I got back there.
Where I live (near Flint, MI) the turbo 6 is legendary, especially the GNX versions. My Dad worked in Buick Factory 40 where the Regals were assembled.