The kit doesn't come with Air injections block offs, but that doesn't matter I don't have it. I have been running with out a cat for about one and a half years now, so I don't have to wory about it burning up. I don't think cooling will be a prob, because I upgraded to a 3 core radiator, and it cools awsome. I am ordering the kit MON, so will get it hopefully before the weekend.
