Originally Posted by wpage

Typically bore (cylinder diameter) and stroke (piston travel) mods are available after engines have been around for some time. Being the I5 is still relatively new not many folks have been tearing them down and experimenting with oversizing displacement. Certainly this will be happening as more and more of these pour out on the Tonawnna NY plant. Once standard increased Mod HP and documented success occurs. Kits wil be available.