Back in the early 80's I had a bone stock 1971 340 Demon with 100k miles on it. it's run 8.95 in the 1/8th mile with h-78-14 tires. Around here I could beat any stock muscle car except for this one guy that had a 1970 Torino Gt with a 429 SCJ . He'd pass me at about 1200 feet every time we raced.
Also in the mid 80's I had a 1971 340 Duster I saved up and bought a home ported set of W2's , flat top TRW's , the old 590-312 DC purple cam, strip dominator intake, and a thermoquad, all steel car with a 8 point roll bar . It would got 10.95 in the 1/4. I was really proud of both of those cars.