Design your own Drag sanction event

I like your clubs set up. The CID can be grouped within a reasonably fair manor. I'm not sure how I'd go about. (This early morning) a general idea would be something like this, for example;

Little SB ......... big SB ......... stroker SB
339 and down .. 340 - 389 ... Speaks for its self (reguard less of CID)
I would divide the classes a tad more due to heads. A set of stock heads or stock Edelbrocks are pale in compare to a Indy or W9 set ported. This would give budget racers a chance to compete and win vs getting destroyed. I wouldn't want to over regulate but make an enjoyable class for the group. NHRA can take it from here.

i like how our slant six club has it set up

AA-Rails
A-2000-2299lbs
b-2300-2699lbs
c-2700-3199
d-3200 and heavier

then
/A-Alky
/G-gas only
/N Nitious
/U unlimited (fuel, blowers, etc)

if you wanted to factor in a scaled weight and CI you could to even it some more