Originally Posted by Averying

Is it also a street car? How much do you care about being competitive vs just showing up and having a good time? What tires are you on? I believe the cat delete puts you right to street prepared category which means the competition will be on slicks.

Running in XSA might be a more reasonable class if you want to leave the cats off the car without going too far down the ‘racecar’ rabbit hole. It allows a minimum tread wear of 200 (more streetable tires) but whatever engine/exhaust mods you want.

Oil cooler upgrade is a must for any 370Z. You don’t need the radiator upgrade for autox but might be a good idea for the track.

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