I would be interested in cams, Chris. Growing up in the sixties and witnessing the major performance impact that cams (along with other traditional hot-rodding parts) has on both E.T.s and the sound of the engine at idle and WOT makes me interested. By default, I would have to include heads in that analysis, though. But I am currently torn between doing a complete naturally aspirated engine build-up, or buying a supercharger and leaving the major portion of a motor build-up for the not-so-near future. Damn wife and kids get in the way of doing both at once.
