Hey guys and gals. I just took a look at my 04 wrx wagon while I was cleaning it and found all the stuffing from the muffler was coming out. I reached in a pulled out what ever was loose. There was a lot of fiber glass stuffing and some perforated metal that was all rusted. The car came with this after market exhaust installed (bought it used). I could not find any brand names on the muffler. Do I need a new exhaust? How long do I have before real trouble starts?