Forgive my ignorance. Can someone more savvy than myself tell me if I would have any problem dropping a powerline/anand cylinder and head from a roid onto an original crank case with original flywheels, crank, and con rod?

I suppose another/better question would be: which parts are not interchangeable? I understand a new crank would be necessary for tapered bearings but what else might I be overlooking?

Thanks in advance.