Oklahoma even allows vehicles on the road that surprise me. Those four wheel open frame thingamabobs? Lights and a license plate, out driving on the road. Ratrods with no fenders. Friend recently bought a 2018 Shelby 427 Cobra, registered as a 1965, no smog stuff at all, dual four barrels and open side pipes. Registered no problemo. It rattles windows when he comes to my favorite restaurant/bar.
I'm thankful, because the only reason my 98 Ranger is still running is due to the deletion of the EGR and EVAP. Was running like crap before hand. Converter doesn't convert anymore, can tell by the smell.