I concur. The "spark points" used on the '03 motor were irridium if I'm not
mistaken. And the "magneto" was friction drive off of the flywheel. You may
find more info. by doing a Google search on Charlie Taylor, who was the
Wrights' engine specialist and a master machinist. You might also try
contacting Nick Engler at Wright Brothers Airplane Company. He'll build you a
replica engine if you've got tons of cash to burn. If that doesn't do it, you
might try contacting The Wright Experience, which is the official EAA / Ford
Motor Company sponsored team.

Fortunately, my Wright ship is motor free!

Harry