Hi the engine I spoke of is a Super Tiger G51, and I used the CL sleeve, although either may work, it would be best if you had an ABC piston sleeve, but the stock ones work, A 12 1.4 x 4 .5 prop, and , The engine was also ran by many people in the past, Windy used one in a yellow airplane he campaigned many years ago , the only mods I did was to make a true venturi for it, and machined a heat dam around the glow plug
Try it, let us know how it is working
Randy