NOOOOO!!!!!!
not the rear mounts!!!
LOL
You are gonna have to tweak that kit out more than you may want to if you want to get some decent power out of those rear mounts. Personally, they only really work on the vettes and those have to be tweaked as well. I would get a single front mount, t76 and call it a day. If you want more midrange, go for a t67 with a .97/1.0 AR or a t70 with a .86 AR.
love the hummer. I was actually looking at those wheels but now that you have them, well, out of the question!!!!