Originally Posted by Dwnshift

Actually they all have 275 front and rear tires as we are only allowed 245 front and 275 rear.
They make about 120+ lbs of tq to the wheels more than us.
Everyone is allowed differential upgrades and suspension upgrades... Sways / bushings etc
Brakes : we are allowed going up 5% on front rotor diameter from the oem 370z rotor and to upgrade to any alum 2 piece 4 piston front caliper. We "upgrade" to the oem
350Z rear caliper.