Links
SOHC4 - A great resource for honda sohc inline 4's, and much more.
moto-northwest - Classifieds for motorcycles and motorcycle parts in the Pacific Northwest
http://www.geocities.com/teleman218/ - A great site detailing one man's cb350 build
Ohio Cafe Racers - These Ohio Boys put together a few slammin' cafe bikes & they sell race parts, too
Todd Henning Honda Twin Racing - CB350 and CB450 vintage race bikes, and racing parts.