Do I need new fasteners, or can I reuse the old bolts?

Reuse your original hub bolts — they'll thread into the mounting flange. Torque to your vehicle's service manual spec.

Can I install this myself, or do I need a press?

No press required. This is a complete assembly that bolts on like the original. You'll need jack stands, a wrench set, and basic hand tools.

What if the hub doesn't spin freely after installation?

Check that the brake caliper isn't over-tightened and that the dust shield isn't bent into the rotor. Spin it by hand before the wheel goes back on — any grinding or roughness means the unit needs inspection.