This may be an awful idea, but would it be possible to have two mufflers in which you can switch between? To explain, I live in an area where there are sound restrictions past a certain time of night. I would prefer having a glasspack, yet need the option to be quiet(er) for certain times. Is it possible or has it been done where a person can switch between two muffler with a lever that shuts one and opens the other? Or something related?
Any recommendations would be great.