I don't know what the rules are for Arkansas, but I know that in some states it's illegal to not have some sort of emissions control on your vehicle -- which a straight pipe exhaust does not have.
I also am not really happy when someone drives by my house in the middle of the night with no muffler. In many towns/cities/counties there are noise rules that you can get a pretty hefty fine for breaking.
At least put glass packs on. You'll still get a rumble, but you won't have people with torches and pitchforks after you because of all the noise.
