[elric]

Gerald Coon makes billet stub cams, teflon chain guides and other misc. parts.
Rotophaze has cam cores that you can send to Crane.
Kevin Jackson should still have some things available.
Spark plug tubes, cam bearings, and timing chains are available reproduction.
I'm working on a mold for spark plug boots.
If you're really after power get a sheet metal intake made. (Hogans)
What other parts are you looking for?

Steve