If you can't tell a Zr1 from a base corvette, you're not a car person. Besides, I don't pick cars for what everyone else thinks. The Zr1 and Z06 are a bit harder to tell the difference, mainly because they both share the same wide body fenders, though the Zr1 has different vents in front fenders and rear quarters. The hood also tells the story of which powerplant the vehicle has, hinting to what trim the Vette is. I agree though, no mistaking a Vipers look. The are pretty sweet looking, just not a fan of the 500+ci V10. The Viper does tons of great things, I'm just not a Dodge guy at heart.