Owner Kirk Phillips brought his 1971 Plymouth GTX 440 — one of only a handful built with a factory sunroof — to the 24th Annual Belvidere MOPAR Happening, where Lou Costabile caught up with him. The car’s export history and a second fender tag full of rare factory options had commenters cataloguing details down to the exact paint code. Watch the full story behind one of the rarest GTX combinations still on the road.