How about a 49 Myron Stevens Midget. Pre-roll cage. Have a real one of those totally restored and sitting in the Peterson Museum in LA. :)

Not our car but http://thegarageblog.com/garage/ebay-find-of-the-day-1935-single-overhead-cam-offenhauser-midget-race-car/

But if you are going to do a Sprinter, the Morales Brothers Tamale Wagon would be the one I would chose to Model :) (they were the kings of Ascot Park)
Or a Kurtis Kraft with a Miller engine :)

http://www.racingfromthepast.com/restoredlap2index129.html

Not as old as the dirt they raced on, but close :)

Gary

"Those who lose themselves in a passion lose less than those who lose their passion"