I ordered mine from Joe for my SS.... The fellow the sells them on e-bay. I dealt with him directly. If you follow his link it will take you to his site and e-mail address. The kit I received is exactly as advertised and fits well. It will work well in an emergency and get me off the road to get a tire fixed or replaced. The idea of leaving "Ruby" on the interstate or having some "roadside assistance" guy bugger her up loading on a trailer was not attractive.
I put a kit together for my LT but for that a spacer wasn't needed.
Joe's response and service was stellar so if you want a spare contact him.