Originally Posted by driverjohn2005
It'* odd because it seems all other GM sedan OEM sunroofs retract outside, including the GP and Impala sedans... Only the fullsize sedans seem to retract into the roof...
Yeah all w-body and smaller cars go above the roof from GM that I know of, at least the latest models. I know pre-97 w-bodies went in between the headliner and roof also. But the h-bodies and stuff like that (park avenue if thats not an h-body) all go in between the headliner and roof, and therefore you lose headroom.