308 muffler internal drawing

found this one:


http://www.ferrarichat.com/forum/showthread.php?t=78750&highlight=stebro

 

Did you scroll down the page? 2 or 3 posts down looks just like my stock 308 muffler.

 

I can't recall anyone posting a 308 muffler cutaway (either a drawing or a photo), but someone was kind enough to once post this '85 328 euro silencer cutaway drawing. A stock 308 silencer has to be the same construction -- i.e., some arrangement of tubes & baffles interconnected inside the outer volume. Although that perforated inlet to the tube holding the tailpipes sure looks small to me total area-wise (but the position of the perforations matches the usual reported flow asymmetry IIRC).
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That's the dwg. I was referring to on that post with the 355 muffler