Hey Clark,
I went to nubrite to have my front two centres bored out. The only hassel I had was trying to interpret what I needed done and how much material I needed them to take away. If you can figure out the exact measurements you need, even maybe by bringing a front hub and rotor in so they know exactly what you're connecting it too, that would make things easier for them I'd think.
Not sure what the cost was, mabye up to 80-100bucks, that is also because I needed one straightened.
Good luck
... make sure your nuts go on the wheel tight enough too, i'm getting longer studs installed... or at least I'm trying to find a place to install longer studs....
oh, forgot to say, yea I used NuBrite up in port kells... used them for all my wheel work. Seem pretty good... take cash