That's what I was thinking about the mis badged v6. My friend had a 25th anniv. Camaro (97 strangely...) and he stomped me in 3rd gear one day, so I see no catching up later down the line either. With only those mods, I doubt it was a z28. Unless you are turbo'd or any form of FI, I don't see it honestly happening...but you can keep believing it happened.
