I like the rules. Very comprehensive, but they will be a hell of a bitch to enforce. That is why I like the old set of rules, particularly for stock class.
With the old rules just check tires, make sure there is no headers, aero, weight reduction, or dampers. Boom, stock class. Simple and takes less than 2 minutes to confirm. As with the Over class... you have FI? Boom, Over class. With your new set of rules, you're going to be checking each component, adding up the points. Some of the allowed mods are difficult to confirm, such as fuel and tune.
Don't get me wrong, the rules look good, but is going to take a lot of work to enforce. My offer still stands to help out when I'm at the events.
Also, if you want to set up rules this way it would help to make the rules somewhat congruent with Redline or Global Time Attack rules, so if the 86 Cup driver wants to venture into other competitions they are still 100% compatible and competitive within their respective classes.
PS. I'd also like to see a 1 to 1.5 pts for stock class under these rules instead of .5 pts allowed.