I have 1 Margay sprint chassis with four wheel brakes, 2 BRM chassis, one with front brakes and one with out that are sprint chassis’ that we used with Rotax motors or Briggs motors.
I have CIK chassis with and without front brakes and 4 KT 100 motors, cans and pipes. I also have 2 Elite roadrace chassis that run KT 100’s as well. Call me if you are interested and I could help you figure out what suits your needs. I am in Mass but may venture to meet you half way.