regarding hondas.

the rules say only H4 cars are eligible for Modified class.
so any H1, H2, H3 car is in unlimited? they have to contend with 500hp awd and rwd cars.
also all honda challenge cars run on Toyo RA1 which would be a Modified Class tire. i don't think many of them are going to go out an lay out $700 for some Hoosier R6's or other <50 treadwear tires for a single event, just in order to be more competitive in Unlimited class.

i think the tire rule is the main limitation for Redline time attack. what about a little old CSP Crx, original D16A6 engine, with 130hp, and some Hoosier A6/R6, kumho V710 .
the car would automatically be in Unlimited because of the tires.

why not have a rule where you can run a stickier tire in Modified class, as long as (no forced induction, no Engine swap).
that way some of the lower HP cars can be competive with the Engine swap and Forced Induction cars which would have to run >50 treadwear tires.