I think most of the kits are .134 to give a little cushion for inspection. There have been cases where the DOM was a little under .120 and the bare minimum (at least it used to be) by rules is .118". I know of one guy that couldn't get his car to certify because more than one bar was too thin when sonic tested and had to replace half the cage. I don't remember if it was a kit or not, been several years, just something to keep in mind.