yep i just like to know if it is a 70 sigle or a twin?couldn't get much info at the web site.
i also just bought a EME60 from MileHigh rc,and sent the cylinder and piston to Frank for a new ring.not sure if it was even needed. it didn't look like your run of the mill china ring,look more like a Frank Bowman ring,(dark in color).
also i check the ring gap on the stock ring it was .014,that seems ok for me,but Franks will be .001-.003,engine was clean and oiled on the inside too.
piston was larger than a 55 engine,they must have kept the 55 crankshaft, rather than going with a longer stroke like some do to make a 60 out of a 55.