Will I need new hoses or clamps to install this?

Your existing hoses and clamps will refit at the inlet and outlet ports. Inspect the rubber for cracks or hardening before reinstalling — this is a good time to refresh them if they're original equipment.

Do I have to flush the cooling system before swapping radiators?

Yes. Drain the old coolant completely, flush the block and hoses with distilled water, then refill with fresh coolant at the proper concentration. Old coolant can contain sediment that clogs a new core.

Can I reuse my fan shroud and mechanical fan?

The mounting footprint is designed for factory shroud fitment, so your existing fan setup will bolt up as it did before. No additional brackets or adapters needed.