Id just buy the exhaust online and install yourself...not rocket science....(sounds like your dealer is being strong armed by the local police into not doing exhuast mods) Also get the pair mod and powercommander...more $$$ but your ride will run like crap (lean surges and sucky throttle response) without the commander with at least the exhuast specific map created by the exhuast maker. a dyno tuned map is best. Honestly , I had the bolt ons for a couple month without the other stuff and i ever had the choice of just bolt ons with no PC and pair mod vs. stock, id take stock anyday! It ran THAT bad!
Having worked with law enforcement a little while back in mass., ive never heard of that "tear down" law, sounds like urban legend to me. Not to mention, the law refers not so much to a different exhaust as it does to increased noise level (dB). Technically, they can get ya for "altered exhaust", but its never been a problem from what ive seen, as harleys, as terrible as i think they sound, ARE louder with pipes than most crotch rockets but seem to rarely be pulled over. But there ARE towns up in my area (near the north shore of boston more specifically) that have police cruisers sit roadside with decibel meters while running radar so they get a noise level as you pass. You exceed a certain level, you get pulled over. This is probably in response to the ridiculous harleys with straight pipes and rise in the "fast and the furious" bumblebee fart can exhausts on little import cars on the way to the beach and the residents get pissed off.
BTW, is Rhode Island starting to get hard up on these laws? Id like to know for the next time we head down to Newport on the bikes!