Do these mount at the factory mirror locations?

Yes — these mirrors bolt directly to existing factory attachment points. No drilling or welding needed.

Will manual mirrors stay stable at highway speeds with a trailer?

Manual mirrors hold position once adjusted. Tighten mounting hardware securely before towing and check adjustment before hitting the road.

What hardware comes with these?

The mirror assemblies are included. Fasteners and brackets may vary — verify against your truck's factory attachment before installation.