Looks like some of you are confusing this with the stock setup. He's using '94 spindles, so he's also using the individual hub/sealed bearing assembly. If this is like my 96, the studs are part of the hub/bearing ass'y. The rotor is separate from the studs, unlike the stock setup. Hitting the studs wont do anything for the rotor. Get a ball pean hammer and hit between the studs on the wheel mounting surface. NEVER hit directly on the rotor where the pads brush as this can lead to warping. Theres probably some rust accumulated behind the rotor where it sits against the hub ass'y. Get some PB and spray into the holes where the studs poke through. Let sit for 30 minutes then spray again. Make sure to turn the rotor a little so the bottom studs are near the top that way the PB can get into other areas. After about 10 more minutes, hit the rotor with the hammer (near the studs) and try loosening. Make sure you have the caliper and mount completely out of the way.