wheel locks.
This is my first post on this forum and it looks like fun!
Regarding wheel locks, I replaced all my lugnuts with a set from:
http://www.ezaccessory.com/.
This is the set I bought:
http://www.ezaccessory.com/12x1_5_Wheel_Installation_Kit_Bulge_Acorn_p/sp1907.htm
I really hate that GM doesn't put real lugnuts on their performance cars instead of those dumb plastic capped nuts. I always replace mine.
The set I got has a locking nut (by gorilla locks, I think) that, unlike McGard locks that have the puzzle in the face of the nut, the puzzle is on the body of the nut. It's much easier to get it off if the nut gets torqued on too tight. Voice of experience with the McGards; had a hard time with the key to the locks slipping out.
PLEASE NOTE! I edited this post as I incorrectly posted the wrong size lugs. should be 12mm x 1.5. I've corrected the link. Sorry!
