The class never made a dent in what it supposedly was created for. Outmoded engines can run in any Roadster, Coupe, Lakester, and Streamliner displacement class they want. The older cars are usually outmoded in areas besides their engines. Usually their owners (and/or drivers) are getting ancient, too.
Thinking it's a low-buck entry class is not quite the truth, either, when you're running against Mariani, Davidson and Stringfellow.