The VR4 is very quick and has a completely different style to it. Personally I don't care for the extra fins, gills and somewhat contrived look of the 3000GT. The Z is clean and seamless in it's design. Stock v. Stock = Z wins. My friend and I ran them no less than 10 times and the outcome was the same every time. I would win by 2-3 car lengths everytime. He went to "Stage III" with a boost controller, intake, exhaust and bov's. I also went to Stage III without the bov's...same result. He has a backseat, roughly 600 more pounds and that's about it. I like his car but I love my Z a lot more. Just my opinion.