Will this bolt straight into my truck without modification?

Yes. This radiator mounts at factory points — no drilling, no brackets, no fab work. Drop-in replacement for your year and model.

Do I need to flush the cooling system before installing this?

Flushing is always a good idea before a new radiator goes in. It clears old coolant, sediment, and debris that could clog your fresh core. Use distilled water and a flush product, then fill with the correct coolant type for your truck.

What's the advantage of aluminum over the plastic-tank radiators?

Aluminum dissipates heat faster and handles higher system pressures without cracking. If you're towing, idling in traffic, or modifying your engine, the extra cooling capacity and durability pay off.