The Cassutt origionally had a constant chord wing but many owners changed things and modified all of these airplanes though time. Judy Wagner raced a heavily modified Shoestring but it doesn't look like the Shoestring with which we are are familiar. Another example is Nemesis. I could be wrong but Nemesis was based on the Cassutt design. It's a shame more of these airplanes aren't modeled for there are so many and they have such rich histories!