This is sad. My town has looked at this numerous times and so far cannot find a testing procedure that would withstand a court challenge. What a mess. Especially the part with "mufflers must be identical to their factory setting, comparable to factory equipment," So what was the original dBa level of a '69 Roadrunner? Are there records of this? And under what conditions, idle, cruise, WOT? And what is comparable to factory equipment? Any oval muffler is an acceptable choice as it is "comparable" to the stock muffler? This is a can of worms that Virginia has opened up.