as i said i didnt research this stuff, as for g35's being a tough opponent, my friend has the g35 catback... air intake maybe and i dont no what else he has. they are not cars to be scared of. stock the car has zero mid range torque all it does is make a lot of noise and this thing weighs like a manatee. granted im sure with a few mods and a supreme diet they are fast cars. but from the hundreds of g35's ive seen i can say maybe 5% had enough mods to make it a car that i would never race (just cause i hate to lose) the rest are stock noise makers. So "generally" g35's are no issue. as for the 350z again the car stock i can safely say are easily beatable because i have proven this to my friend who did not believe me and rode with me during a random race with, but these mid 13, 350z are not stock and you will rarely ever see and are prolly cars once again i would never race. I agree 350z's are sooo sick and i would jump at the chance to have one but it does need mods. So a close to stock 350z is not something to worry about. BUT who really nows whats under the other guyz hood so it all depends on who u end up racing, guess maybe ive been lucky.