im with sandy on that one. your gonna throw off a bunch of stuff on your bike and it wont run correctly. If you want a secondary option, get a muffler thats loud. I have a coffman exhaust which is almost exactly what your doing except i have a small baffle that someone regulates it, but its still loud enough to make a point and its cheap. if you were to buy one brand new, i believe its 190$ if you can find someone selling a used one then you could probably get it for cheaper. i can remember exactly how much i paid for mine, but i got mine used and i only paid like 130$ for it. but its cheap and its loud. there are a couple of exhausts out there that are cheap and loud and keep you from running an open header.