You can get old studs out with a BFH. Some people screw a lug nut on backwards to the lug nut to give you something to aim at, which makes it a little bit easier.
When installing new studs, do not install them with a BFH. Either have them pressed in (which you can't do with the hub on the car), or use a couple of nuts to "draw" the studs in as you tighten the nuts.
When installing new studs, do not install them with a BFH. Either have them pressed in (which you can't do with the hub on the car), or use a couple of nuts to "draw" the studs in as you tighten the nuts.