Do I need new mounting bolts or wheel studs when I install this?

The assembly uses factory bolt holes and stud pattern — your existing hardware will work. Inspect studs for damage before install; if any are bent or stripped, replace them individually.

Can I reuse my old brake rotor and caliper?

Yes. This is a hub and bearing replacement only. Your rotor and caliper stay on — just slide them back onto the new hub once it's mounted.

What tools do I need to swap this in?

Basic hand tools and a socket set are enough. You'll need to remove the wheel and brake caliper, then unbolt the old assembly and slide the new one on. No specialty pullers or bearing presses required.