Z51- Drive it like ya stole it
Mag Ride- Out for a Sunday drive.
Z51 cars come with cross drilled rotors, slightly bigger rears i believe too. Extra oil cooler, quicker rear end gears(3.15???), stiffer front/rear sways.
I find it funny GM gives you a model make for the auto-x track, but when something breaks when using it for its built intentions, not covered under warranty for racing.