[Dangerous Doug]

Pirate is correct. My objective is to build an engine using a vintage block that will satisfy my needs for horsepower without violating the emission standards for that year block.

I currently am assessing which year block I need to use to keep the equipment requirements simple.

I have heard that I need a pre-1970 block, but then later read that I needed a pre-1968. BUT, even those years had some equipment requirements.

I also don't want to put in a hot cam only to find that I need to tear my engine apart to replace it with a lesser cam. A kind of "measure twice, cut once" approach to CA emissions requirements on Cobras.

I think the CA Bureau of Automotive Repair is a good lead. I'll try to chase something out there, and see what I come up with. Any other suggestions are welcome.