Way to base a position on the (false) argument of sunk costs!
Your argument ignores the entire installed base of already built NAs and doesn't take into account those who would want to do so or feel allowing it would make the class "more similar Miata" than otherwise would be.
I'm not saying I'm uncompetitive in my current car, I'm not saying I need anything to achieve "more parity", but to the point of us participating in a "spec" class the more we can do to ensure we are all playing on the same running gear, why is this idea not worth pursuing?
4-5 years ago when the initial suggestion of permitting the NB front suspension on the NAs was scuttled, I was neither an accomplished racer nor knew of the technical differences or behaviors between the platforms so I felt I was unable to provide input on the suggestion or proposed rule. Now, from where I'm positioned, it seems there's a significant reluctance to revisit this previously proposed rule change.
Why?
Why? Because it is not better for the class: it doesn't make anything safer, does not improve the competition, and most of all adds COST. NB suspension isn't free. That's not a false argument, that's the facts. The class has had 1.6 and 1.8 for a long long time. Choosing the year of car to race is not a new decision that needs to be addressed with a rule change.
We just spent a considerable amount of time making sure the 1.6 was competitive. We have achieved that goal (that the previous SMAC hadn't already is debatable), and there is no reason to continue to make costly changes for the sake of making cars that can never be identical, less identical.
Your argument, on the other hand, means that if I want to put a VVT in my 99 I should be allowed to do so in order to have identical cars because I feel it would be the right thing to do to have a spec class.
It's a slippery slope. Allowing wholesale updates to cars means we will all need to update to VVT drivetrains. Except the cars will still not be the same because they aren't the same chassis. So we all need to go out and get 2005 cars so we have a spec class. And the same people will prep their cars well, and the same people won't (or they will think they have). The same drivers will win and the same drivers will finish DFL. We will all have spent a lot more money and achieved nothing. Actually, this sounds like a great idea as a shop owner...but a terrible idea for the class. So I defer to what's best for the class.
Full disclosure: SMAC chairman, my opinions do not reflect anything to do with the SMAC unless specifically stated.
Todd Lamb
Atlanta Speedwerks
www.atlspeedwerks.com
SpeedShift Transmissions - reliability and performance
Spec Miata / Spec Boxster / Spec Cayman specialist
Spec MX-5 Challenge Series Director
Global MX-5 Cup team