I have 20% on my car, and let me tell you, it's the only way to fly. I've had cops eyeball my car like 6 times now, and actually got pulled over once, and no one has said a word. I think the fact that it's a black car causes it to look darker, and the cops see the same thing and think that the car is fucking with them. Really, unless you act like a total douche or are in a county where the cops are bored (St. Paul, the cops have better shit to do than harass me for my tint, other than that it's all highway) you aren't going to get hassled.
As far as the race pipe, all that is is the 2nd cat delete. Good part, but I fail to see how someone can charge like 175$ or whatever for a peice of steel and two flanges. Another guy on here (mazdamn02) and myself are working with LSE performance to get an exhaust out for our cars. Looking to be a sweet unit and decent gains. They're going to test fit Josh's car and once it's a go, i'll probably be going that route. In any event, once again welcome, and enjoy your stay and whatnot.