Parts?

I was actuallty given a brand new flowmaster dual exhaust when I bought the car. The guy couldn't put in the work anymore and wanted to see it finished. Its goin on as soon as I can get it done. I am not going to cut the dash. any kind of radio or CD player I put in will go behind the driver. IT is already wired to have it behind the driver. I don't want to change the dash just repair it.