http://www.ebay.co.uk/itm/like/171236513430?limghlpsr=true&hlpv=2&ops=true&viphx=1&hlpht=true&lpid=108&device=c&adtype=pla&crdt=0&ff3=1&ff11=ICEP3.0.0&ff12=67&ff13=80&ff14=108#
http://www.ebay.co.uk/itm/like/151015307321?limghlpsr=true&hlpv=2&ops=true&viphx=1&hlpht=true&lpid=108&device=c&adtype=pla&crdt=0&ff3=1&ff11=ICEP3.0.0&ff12=67&ff13=80&ff14=108
any of those nay good if so which would be better for 3s and if i gto one of those would i still need to change the gearing and would it fit