Swade,

The stock muffler cuts the rasp off well enough for me. Never took a db reading though. Will take a reading later , if I remember.

Ifield,

Cut the slot. Well, maybe not a slot. I cut a slit in mine. the pan material flexes around the exhaust pipe.

jetgod,

That YS120 is going to be kinda heavy, don't you think? Maybe wide too.

Allie33