Bryan, about 99% of the guys here are running AC R45 plugs in their inliners. Any autoparts should be able to get them, I buy mine at any of the three Farm & Fleet stores in my area. Very common plug and still readily avalable and it's what you will get if you order plug from any of the vendors. 10,000 miles on the set that are in mine now and they burn a nice tan color, and my engine is an oil user to boot.
DG

Last edited by Denny Graham; 08/27/2009 2:10 AM.

Denny G
Sandwich, IL