Same way around here. Need to be atleast a high 8 sec car to be competitive (mid 5s 1/8 mile). I'm quick enough to compete, but nowhere near the fastest. Only one Procharged car ever shows up and it isn't a street car (400+ inch LS Firebird procharged on alcohol)...barely fits the rules, but it's fast. The rest are turbo GM LS motor mustangs w/ the occasional turbo LS Camaro or turbo ford powered mustang. Most all are bottom 5 and high 4 sec 1/8 mile cars. 7 sec capable 1/4 mile, but all these shootouts are done 1/8 mile.
Me and several others are the old school nitrous guys and the fastest run in the mid 5s.
No one even bothers showing up w/ a NA car anymore. I was the last NA car running these street car shootouts, did it for 10 years.