this is from the guy who really did work there. NOOOOOoo 36s or15s!!!! The hornet fyi is an /051. how do I know? it has red spinner and restrictor. .049s were blue. Cox thought it was a good idea, so they copied it like they did the hemispheric gonfig in the glowheads. johnsons couldn't be hopped up! we did everything possible ro the engines. Jack spent hours polishing the insides of engines,made little or no difference,sometimes made rgem worse, many times jack would come and say" jimmy,I need a hot engine "i the reason for only having 2 long long screws to hold the cylinder on. they all that was nrcessary to hold the cylinder on the case, and less chance of distortion at assembly. assembly jim "th mythbuster" ivey