Agreed, had the same idea awhile back. If you could mark the one unique stud somehow wouldn't be too bad, but should be a pretty effective deterrent otherwise.
Gorilla does not make a 1.75" or 2" version of the X2. I have discussed this with them at length about offering a correct length for one of the most common stolen wheel applications out there, but no dice. There product rep seemed to indicate that they may make some at a later date, but had no ETA. You can buy the Gorilla guard in a 2" length however which is prob the next best option