. . . and, I believe, the Ardun roadster you're referring to. It's a '23-'25, and probably classified as an Altered Roadster (or just Roadster), not a Modified.
It was primarily a Drag car. Sometimes a show car, too. It ran at the first NHRA Nationals and was deemed the Best Appearing entry. It later ran with a McCullough pushing thru the Ardun. This picture is at an early Colton meet.
I don't have a picture of his later Blown Fuel Roadster which ran at El Mirage and Bonneville. It was a '34 Coupster (coupe made into roadster) usually driven by son "Billy the Kid" Scott who ran as a rookie at Indy and compiled quite a few drag racing victories during his younger years.