"Arthur" wrote:
Good day !

Howdy! :-)

Would it be difficult and or costly to change parts in my very good
working 1992 evinrude 15HP long shaft to make it a short shaft ?

Difficult = No
Costly = Yes

You might find somebody with a short shaft that would prefer a long
one though. You could work out a swap.

i plan to buy an inflatable and it needs a short shaft engine...

One other option, he

http://www.thmarine.com/product.cfm?PRID=23

Rick