You mounting those 305s on stock wheels? I've been debating stock size or 305s when my stock tires go on my Redeye. I'll likely get the MT S/S tires, since I really like the MT Rs for the track. I know people who say 305s aren't meant to go on a NB stock wheel (Wheel width to small), but will I die? lol.
Also blow the doors off that GT500! Wish there was one in my town I could play with. Maybe they are all hiding. Dammit, lol.