I wish ya'll could've heard it. I guess those headers made a difference when it comes to sound quality. It didn't sound anywhere like the OHV that it is, but more like an DOHC lexus V8 with a nice magnaflow exhaust. It was a very impressive car. As for why they tinted the outside, I would assume that they make a special tint that that's thick enough for outdoor use. I know the guy that does the tint has skills.