Do I need to drain the cooling system to swap this in?

You'll want to drain or lower coolant level below the tank attachment point before removal. Top up after install and bleed any air from the system per your service manual.

What hoses come with this tank?

Tank only — you'll reuse your existing overflow and return hoses from the old unit. Check them for cracks or hardening while you're in there.

Will this work with my current radiator setup?

Yes, this tank integrates with the factory cooling circuit. No radiator or thermostat changes needed — bolt it on and reconnect your hose lines.