Polk Performance. The owner of East End Towing has a dyno but I am not sure if he will let joe schmoe off the street on it. There are a few mobile dyno's running around. Dyno Drag'n and there is one more (forget the name). Dyno & Performance has one in Ft.Smith (I think thats where they are). DynoSpeed in Memphis has one as well as a few other shops over there.
