Here you go
Bill Vukovich driver , Fred Gerhardt car builder , Drake/Harley engine
http://ewarbirds.org/automotive/1937midget.html
I find this quote very interesting
" It is our understanding that this car, with Bill Vukovich at the wheel, and with the help of his mechanic brother Mike, won the equivalent of approximately $900,000 in 2009 prize money dollar value. "