[BigAls87Z28]

Cause Mobile 1 is the best! And yes, C6's come with Mobile 1 from the factory.

Anyway, the new Z06 isnt just a "427 SBC" in a C6. Its a race car with licence plates. They went a lot farther with this car then the last generation. The new Z06 closely mirrors the C6R race car and they share a lot of the parts.
Its a sick car no doubt, and an extra 50k? Maybe 20k if you load it up nice, but base Z06 starts at 68.5k. Thats a Ferrari Killing, Ford GT Toasting, Viper-Whatting 505hp Carbon Fiber Corvette...for 68.5k.

I will agree with you also that your father is probably best suited for the regular C6, and if he wants to get a little crazy, he can opt for the Z51 package where he will get larger cross drilled rotors and a different geared 6spd manual to reach the top speed of 186mph. Its almost exactly like the last generation Z06. Put a new set of rubbers on there, and you are lapping with the best of them.
Dont mod it at all at first, just put a new set of tires on it and take care of it. Thoes run flat goodyears suck dick.
Also remember that this year the C6 gets an optional 6spd automatic with paddle shifters. Might wana look into that. 8)