OH OH OH Something free dave!!! What i did yesterday was hollowed out my spark arrestor = "legal look" Nice noise and free flowing Exahust.
It was a pain in the arsszor. everyhting was already rusty so i went in there with pliers, hammer, air chizzel. I cut the top off with a die grinder. and started cutting away at the stuff inside. If its too loud, i`ll go get a mullfer type thing anf stick it on.
Thats not off my SP125 but you get the idea. After yuo`re done, weld it back on and patch up any holes you may have made.