I have had a number of tickets for front window tint. However, every time its been because I was speeding and I talked my way out of it, but he wanted to give me a ticket for something.
So I just bought a set of untinted junkyard windows I throw in whenever I need to get it signed off, dont even put the door panels back on, park in the back of the lot and when the cop comes out just point to it. Then once its signed I go home and swap them back to my tinted pair and put the door panel back on.
I bought CJs and have loved them. No problems even 3 years later. Would do it again in a second. The only issue is that you have to have access to above the subframe bushings, so its much easier to install them with the frame outside the car. So they are a little harder to install.
From what I have read its Textar that is OES for Porsche , although people disagree whether the pad they sell through aftermarket venders and through Porsche dealers are identical. But the aftermarkets I used worked well for me.