While you're looking, think about using a jack plate (fixed, manual or automatic).
Just bolt it on and you now have the option of a 20 or 25".
Here is a fixed one.
http://www.boatownersworld.com/thmar...king_plate.htm
TH Marine Hi-Jacker***8482; Fixed Jacking Plate
This tough 3/8" thick aluminum bracket provides an inexpensive solution to mounting a long shaft outboard to a short transom. Also great as a fixed jack plate for all V6 outboards. Handles all outboards up to 225 hp. Three engine mounting holes and two transom mounting holes combined with a 3" designed lift allows a total of 5 1/2" of lift with a full four (4) inches of setback.