I came up with a 20cc side carb and exhaust at a local swap meet. It is marked XZY on the front case. The spark plug is at a angle out of the top it also has a canister type muffler that looks like it came from a weed eater. Mounts from the back not a beam mount. I am looking for a carb spacer and a smaller muffler. I have contacted several on line vendors including VV. They had no ideal what I had. XZY engines normally had a rear carb and exhaust. Any suggestions?