I believe you can use: Suzuki PE250 piston. 60mm crank x 115mm rod with 18mm small end. Piston's are cheap enough...but crank may cost a bob or two. I only know/think this is all true as I've got that crank and looked into a cheap conversion myself using an Ebay alloy 225 barrel. Rapido would be a better starting point I guess. I bought that piston too, but put it somewhere safe!?
It was "Knowledge" on here I think who mentioned about that conversion...if it wasn't you Martin sorry!
