C90 Boulevard (debaffling)

The C90 can't be debaffled so to speak for one reason.
Engineering. The actual muffler on the C90 sits behind the engine/trans and forward of the rear tire.
If you look closely the pipes come off the heads. Then 90 into the muffler and then 90 out of the muffler into the housings that look like they would be mufflers.
Your gonna need a complete system to get more volume.

See photos below.
 
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