This car is rated as a Tuner car. Not only can you win the Skyline Pace Car, you can also tune it up. To me, it's more of an unfinished Nissan R34 Skyline. You can't replace the rear wing, but you can give it a Racing Muffler, give it a good turbo, maybe try some racing tires... regardless, it makes a pretty insane drift car, not to mention a good circuit racer. It's a good thing to race with for series that does not require Production Cars Only.
Yeah, it's in a prize car list. But when you get it, it's one of the sweetest surprises in GT4. Go forth, young one! Race to your heart's desire.