Just became a member and noticed your question. I have seen tech artical on the Tigers United web site. They used #42451 Flow Masters, @ $65 each….$USF? He also mentions that they now have a TriDelta muffler that is quieter, the same size, and are $20 more each!
Here’s the link
http://www.tigersunited.com/techtips/Pa … haust1.asp
Never did that before, hope it works.
Any ways, hope that this helps!