well i bought it. it`s a 660evl . about 20 yrs old. $40 64.2 cc`s had to do alot of cutting on engine case. the cylinder has small fin`s on it. compared to my g-62 the cylinder is small. the bore is big so i`m sure it1s 64 cc`s. carb mounting is easy, it had a rubber boot & a plate the carb bolts to. i just made 2 little brackets to keep it from flopping around. the linkage might require a bellcrank. i have a machinest friend,i`ll ask him to make a prop hub for it, it will be about the same as the g-62`s. then the c-h ignition on it. i`ll have to figure out a mount for the pulse switch. probably use the front 2 cyl. bolts to bolt a bracket on then mount the switch & make it adjustable. i hope it pulls the hybrid around well. it seems fairly light i hope it makes good power, i might try & get a new piston & rings but the cyl. looks good.
wish me luck, conk