The 10 thru 16 horsepower motors take the same cam. The 18 horse power cam is different from the 10 thru 16 horse power motors. 18 horse power has the same lift..more duration.

The 26 carb may be too small for a 14 horsepower block. All my 14 horse power motors had a 30 carb on them.

MERK
I did not realize that about the cams. Do you know of any good aftermarket ones ? I am not looking for a high rpm racer, just some more low end torque. I see the 18 hp cams are pretty exspencive.

Give these Gents a call:
http://www.lakotaracing.com/Cams2007.htm
They can recomend a cam for what you want to do.
My Son build a K321 base on this write up:
http://kirkengines.com/
The motor build up is at the bottom of the page-Killer Kohler Part 1 and 2.
Mr. Kirk has a nice cam set up that may go in my 100.

+1 with the 16!