Easy job if it is a short shaft converted to long, all you normally need to convert it back to short is a short drive shaft and a short brass shift rod connector and a short bolt at the rear of the gearcase. You can cut 5" off the long water tube. Exception: If the converter replaced the shift rod instead of simply using a long shift rod connector you will have to go back to a short shift rod. You have to look to see what's in there. Hopefully, a long connector. They are obvious. Long one is roughly 6' long, short one is roughly a bit more than an inch. If push comes to shove, you can cut exactly 5" off a long shift rod and use a chainsaw file to cut a notch in the end of it. I've done it many times.
