I don't want to turn this into a defense of the "hack n tap" and hijack the thread but... I've had my R.E. H&T on for over ten years and have put countless number of trips over the Con, Fordyce, Dusy, et al and around 120K street miles.
Since I live local to R.E. I was able to purchase one of the first kits they put out, literally! I have to tell you, I've installed a total of 4 H&T's in various Jeeps and everyone of those guys love it too. You cut slow with a angle grinder or a circ saw with an abrasive cut off disc and follow that up with making it flat with a flap disc. Then drill and tap, done. Just go slow and don't force that tap, take small bites and back it out a lot.