My panhard bars didn't clear my tail pipes,they lacked about 1/2in before they would clear. I could of just banged them in about 1/2 in untill the bars would of swung by them, but I wanted to try turn downs anyway. It was a good excuse to put the dumps on. I did try running with out the dumps but my car had such a bad drone at about 1200-1300 when I would pull off from a stop that everything in side of the car would shake and rattle. The drone was so bad that things that I have in my cup holder would actually shake and rattle out into the floor boards. When I put the dumps on it quieted the drone down a lot, as far as being legal I'm really not sure. I don't see why my setup would be illegal because all I did was put on dumps instead of tail pipes. I'm still running my X-pipe and 3 chamber flows, just no tailpipes. But I could see where a cop would give me trouble about not having tail pipes because he would think I was just running straight headers or something..
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2000 Mustang GT