Does anyone recognize this engine? I bought it at a hobby swap meet yesterday. The person that I bought it from bought it off e-bay in 2001 from a persom in Arizona. It was described as a 4.4 and was in kit form. Rough measurments (I have not assembled it to get accurate measurments) looks more like a very over square 100cc. The e-bay add said they were used in racing aircraft.

Thanks
Mark