This subject is not exactly in my wheelhouse as a modeler, but I have always been a fan of the racing planes of the 30's-40's as well as a fan of famed test pilot Tony LeVier. Tony flew the original Schoenfeldt Firecracker, and after reading about how the replica performs, I have even more admiration of his flying skills. I thought some of you might find the story interesting, and it would make a great modeling project, as I vaguely recall there being a resin kit of the airplane. Knowing our resident vintage racing airplane modeler/historian @Moa has either built one and/or has a folder on it, I'm sure the linked article might be yesterday's news, but I offer it nonetheless.
Mike
http://roadrunnersinternationale.com/firecracker.html
Excellent site with photos and text on the 1938 National Air Race, in which the Firecracker competed...those were the days, and those were steeely-eyed men and women who flew them!
http://www.airrace.com/1938NAR.htm