Thanks for the call out on the `tub, Greg.
But for a slick ship, consider the Mummert Sportplane, which also competed in that series of races. It was the third airplane built by Mr. Harvey Mummert.
According to Jack McRae in the EAA Experimenter from 1989, the Driggs Johnson DJ-1 won the first event when Mummert dropped out due to engine troubles. The Mummert "won" the second race simply by finishing! It had broken a valve spring on the Harley-davidson motor, and Mr. Mummert was able to cage one from a passing motorcyclist! As noted above, the Bathtub finished the 140-mile third event; Mummert finished only 20 miles into the 140-mile race, again with engine trouble.
I'm saying with the engines now-a-days, that Sportplane would be a contender in the digital wood stick-it-together category. If I could figure out this "New Improved" HBA system worked, I'd picture what I mean.