Do I need to drain coolant completely to swap this in?

Yes. Drain the system fully before disconnecting upper and lower hose lines. Capture old coolant in a drain pan—don't skip this step, since even small leaks will trigger overheat warnings on your dash.

Are hose clamps and fasteners included?

Radiator assembly ships without clamps or fasteners. You'll reuse your existing hose clamps and factory bracket bolts, which should already be on hand from your old radiator.

Can this handle a tuned engine, or is it only for stock power?

This radiator is matched to factory thermal demands. If you're running significant power modifications—ECU tune, turbo, or supercharger work—talk to your tuner first; you may need auxiliary or upgraded cooling to stay safe under load.