I only participated in one of them. I was running an 8.90 Index Class at E-Town on Saturdays, it was for EFI 427 cubic inch max engines, 3200 pound minimum weight cars. I owned that class!

If I could keep the car straight to the 330 I knew I would win the race. I was the only SBC on nitrous, everyone else was blower or turbo, and most of them Vettes. They either didn't know how to hit the tree and could care less about driving the stripe. Hell, I had one guy go 8.40 flying past me! I was also the only clown deep staging footbraked!
A good friend that ran the Shakedown events with Dave gave me a free tech card so I could make time shots (Qualifiers) with the 8.50 cars. Only stipulation was I couldn't actually race in that class if for some dumb reason I actually qualified and I couldn't tell anyone I had a FREE tech card! I am sure this many years later she won't care I spilled the beans...........