I found the results for the
1953 Pikes Peak Championship. It shows a car driven by Charles Bryant was named "Walt Woestman" and was powered by an Alfa Romeo engine. I guess it's possible that it was a chassis and body of Woestman's design but running an Alfa Romeo engine. However, Herb Bryers never drove the car at Pikes Peak. In
1949 and
1950 he drove a McDowell, and in
1952 he drove a car named Weiher Alignment. Also, a Paul Kleinschmidt is shown driving his own chassis with a McDowell engine in the 1953 Pikes Peak and not the "Woestman".
As far as the Indy claims go, in
1938, car no. 59 (DNQ) was a Woestman chassis but was driven by Floyd Davis and was McDowell powered. (Look for Tazio Nuvolari on the list) In
1939 and
1940, the same McDowell powered Woestman was driven by Lou Webb and Fred Winnai respectively (all DNQ's). There's a lot that doesn't add up in the story but it appears there was a "Woestman Special" that may have been Alfa powered. It just wasn't the one associated with this tag.