GRP GT Wagon, pipes, wheels, painted calipers, Mass tags last three reading YOO, all badges, at the pet store in West Lebanon NH yesterday. Pics to follow. http://i25.tinypic.com/35k2waw.jpg http://i32.tinypic.com/243q8le.jpg
Rotor measurements should be done with a micrometer rather than a caliper as there is no way to measure only the contact surface with a caliper... Incidentally, a 0-1" micrometer is invaluable for more than just brake rotors.
FWIW: The Porsche rotors are cast, then drilled. If you look at the holes in the picture provided, the holes have clean edges and on one of them, you can see a bit of flashing that hadn't been removed. The casting marks are beyond the path that the drill bit would have taken through the two rotor surfaces.