4 storke

Hello there guys! I was wondering if such a thing is even feasible? Thinking about buying the 212 death row 4 stroker and putting it on the Motoped Cruzer as a custom build pretty soon. However, my brother explained that such an engine would simply be too big? What do you all think?

i have bought a new engine kit 4 stroke rear mount from livefastmotors.com and i have a 2007 specialized bike extra small and i realized on the back thatyou have to have the big bolt not quick release so i just said **** with it i should use a new bike because my specialized is really worn...