Jack.... This is the 50/85cc that I just finished. The 15 and 200 jets worked great. It started on the 2nd kick. We had to make a bracket for the pipe in a hurry. I will make a different one later. Put together a kit for the 85cc big bore kit, pipe,carb and jets... I'm ready for another one. Thanks for all of your help! ScubaDave. Daytona Beach, Florida. @ NICE ENGINE STAND ,, WISH I HAD ONE @ WILD AND MILD