I have put three different sets of underglow on my GP. It's nothing but a pain in the butt and a waste of money. They break constantly. The neons crack and the leds just wear out and you noticed that the individual bulbs go out pretty fast. Yeah it looks sweet and all. But it really isn't worth it in my opinion. I bought my underglow kits on ebay. As far as cops go, I never had any trouble and I was running red underglow I live in Ohio, where it is legal. But I drove through Pennsylvania quite often,where it isn't legal and never had any problems.