This actually happened the weekend before last, but I'm still excited about it. To preface the story, my '02 has an Invidia dp and a standard Borla catback for mods (unless you count a Kartboy SS).
I was getting on the interstate behind a new (very nice) silver 350Z. It had the larger factory wheels, so I'm not sure if it was the Track package or what...very sweet car though. We were behind a line of cars on the onramp to the interstate, but I just had a feeling he was going to hit it as soon as he had a chance. Sure enough, at the first chance, I saw the tell-tale black puff from the pipes and he was off. Since I was expecting it, I hit it at nearly the same time (had it in third). I redlined 3rd and quickly got 'er in 4th and the Z could not pull. I couldn't gain any ground, but he couldn't pull away either. He started about 1 1/2 - 2 carlengths ahead at 40-45 mph when we started, and that's exactly where he was at when I let off about 105-110. My wife, who had been reading a book, happened to look up and noticed the speedo north of the triple-digit mark and freaked out at that point (aka - point of rapid decelleration).
The guy had a passenger with him too and he took the next exit. When we went by him, he didn't look over, but threw up a hand to acknowledge a good run. I figure he didn't want to look b/c he probably didn't expect the little blue wagon to stay with him. I was completely surprised by the result. From just about everything I've read, I was under the impression that a 350Z could walk a WRX fairly easily on the top end. I just wanted to see how bad I'd get beat...and ended up in a dead heat. Now I really can't wait for the Cobb Accessport w/ stage 2 program...and new Slipstream 16's to shave some more weight off soon.