www.inliners.org
Website sponsored by guy's that like inline engines. Checkout the Bulletin BRD

http://www.langdonsstovebolt.com/
 Great source for 235/261 Premium Cast headers, mini HEI's, Offy intakes and other inline 6 parts. Best prices around for OFFY intakes.

http://www.lockintool.com/purchase/ 
Best tool made for installing and removing spirolocs on pistons!

http://performancedistributors.com/
The manufacturer of the distributor used in the 250 and 292 Dyno tests. One of the best choices for a distributor for our inlines!