Nice got mine from CarMax as well.
IMPORTANT:
1. Change your oil immediately, carmax will most likely have changed the oil as part of the service. I'm very certain that they do not put quality synthetic oil, probably used whatever bulk oil they have in drums.
- After changing the oil i noticed much quieter engine operation as well as smoother gear shifts.
2. Go easy on the gas pedal, carmax also fills the car up with their own inhouse gas station which is no better than grade 87. Your Z requires at least 91.
-After waiting until half tank, i put 93 grade fuel and immediately noticed a tremendous boost in gas pedal feel and acceleration.
Geez, and i thought right off the lot the 370 was quick, haha!
I personally paid 50+ for better gas and oil and piece of mind.
Enjoy
