I found a similar aircraft to a Cassutt but just out of curiosity I had to suggest this aircraft since I did not find one on this site for any sim. My uncle had a Cassutt for a while, these are very unique small planes. I could lift the tail of the ground with one finger! They are very small planes intended for the Formula One race class or I have seen another class of racing called the "V- Class". My uncle is around 6ft tall so he barely fit inside his but he loved it. He said there are fully aerobatic capable albeit for an aerobatic plane they are on the underpowered side. Still, they are good for racin'!
http://www.cassutt-racer.com/