As a tech with his PA State inspection license I'd thought I'd throw in my .02 on the window tint issue. A few years ago there was a possibility of making a certain level of window tint legal, this would have required inspection stations to buy light meters. I don't think this idea went over too well.
Simply, the outcome was that window tint is no longer a factor for pass/fail of the state inspection. It is still illegal to have and I'm pretty sure the fine in Philadelphia County is $99.50 a window.