I couldn't find the distributor, but I did a little research in my library, and came up with some information on the CAS for 1970. It wasn't coded on the option list because it was installed on all engines built in 1970. On the six-pack and hemi cars, this included a throttle-stop solenoid; on the "lesser" engines, it included the ignition-retard solenoid. This was supposed to give a lower initial timing setting at curb idle, to help lower emissions and lower the possibility of dieseling on shutdown. The solenoids are failure-prone, and the system was always a pain to deal with. If you want originality, put it on; if you want driveability, use a different distributor. The contents of the Cleaner Air System depended upon the vehicle's ultimate destination; those with more restrictive emissions requirements got cars with the California package, and those that did not have such tight regulations to contend with, got the package with the less-complicated vapor systems. With cold-air induction, and the Chrome Dress-up package, my Superbee came with a valve cover breather that only had one nipple, and the lugs for the exhaust manifold heat stove ground off. Standard equipment for the CAS was a breather with 2 nipples, and a heat stove with ductwork leading to the left snorkel of the air cleaner. My car was also an early build, and came with what is commonly referred to as the "1969" HP intake manifold. My engine also was built with the oil pan that has baffles both fore and aft of the sump, and of course, the windage tray.