Re: can a long shaft be made as a short shaft
If the short shaft version of your motor is 15", the answer is most likely yes. You will need a shorter drive shaft, water tube and shift rod. The 5" insert in the exhaust housing will have to be removed too.
If you obtian the correct parts and do the conversion, I recommend that you not sell or give away the longer parts - you never know when you might want to convert it back to the long shaft!