QUOTE(wndsnd @ Aug 12 2014, 09:06 PM)
Kind of late to be asking this question.
I've been running rear drilled 5 stud rotors for a couple of years now doing 10 to 12 AXs a year. I did tack weld them on the inside just so they stay in place, when they loosened up a bit when I forgot to torque the nuts down once. If you do that, just make sure the wheels are on and tight before you tack them in place, so the studs are are straight.