I personally use a cherry bomb muffler, and now that its packed with soot it doesn't muffle very much. So it is in effect a straight pipe however it conforms to the letter of the my state law requiring my car have a muffler. My turbo, ox-cat, and resonator do a good job of muffling the engine.

I personally recommend that you install some form of resonator. It helps reduce the low end drone significantly. Also a exhaust tip that angles down at the ground helps too.

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green 85 300SD 200K miles "Das Schlepper Frog" With a OM603 TBO360 turbo ( To be intercooled someday )( Kalifornistani emissons )
white 79 300SD 200K'ish miles "Farfegnugen" (RIP - cracked crank)
desert storm primer 63 T-bird "The Undead" (long term hibernation)

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