http://www3.towerhobbies.com/cgi-bin...&I=LXHKW1&P=OW
http://www3.towerhobbies.com/cgi-bin...&I=LXCC94&P=OW
http://www3.towerhobbies.com/cgi-bin...&I=LXJPZ5&P=OW
You may want to enquire about that backing plate as it is for a TZ and if you grind the nub off your crank it may work but you need to make sure piston clearance it alright.
Pretty sure its pull start only, tho you could cheat and take the backing plate out, press or drill the brass bushing out, get it alloy welded and remachine the face where the con rod sits against.
http://www3.towerhobbies.com/cgi-bin...=OSMG2112&P=OW