I wound call what I do 'hard-core Autocross' but I don't plan to use this car for much else. Sounds like the Illuminas will be good for a could of years.
Thanks for the info.
Sorry about hi-jacking the thread.
btw, most automakers & spring coumpanies use higher ft rates to induce understeer as it is easier to recover from than oversteer & therfore "safer". Most racers, in fwd cars, use higher rr rates to induce oversteer because its faster but requires more driver skill.