As a point of reference the C10 engine can easily be converted to chain drive by replacing the transmission from a chain drive bike. The ZRX1200 can also be converted from chain to shaft in the same manner. I've done both. The C10 was converted using a five speed ZRX1200 transmission which basically drops in. The ZRX1200 conversion to shaft involved dropping a C10 six speed transmission (with a few minor modifications) into the ZRX cases.
The C14/ZX14 may have the same similarities, not sure.