While browsing 350 stuff on Ebay, I noticed a pair of 350 Honda sleeves and I remembered the 350 Powroll kits for the 305 Super Hawks. My question is, would it be possible to have a CB77 cylinder bored out to accept a set of 350 sleeves and would you be able to use the 350 pistons without having a problem as far as valve clearance and such? I'm probably just wasting time, but you never know. I DID see, over on the 305.com forums where there was discussion about building a 500cc engine out of the 305, that involved using the 450DOHC head and cylinder, but I don't have a clue what all is involved in doing that. Sure would like to see some deatails and photos on that!