Do these mount at factory mirror locations?

These mount at factory rocker and mirror points — no drilling or bracket fabrication needed. Test-fit before final torque to confirm alignment with your specific truck.

Will the manual mirror stay in position once I adjust it, or does it drift in wind?

Manual towing mirrors hold position through friction or detent mechanisms built into the ball joint. Wind at highway speeds may shift them slightly — check your angle before highway runs with a loaded trailer.

Do these interfere with tonneau covers or truck bed accessories?

Towing mirrors extend outward, not rearward — they won't conflict with tonneau cover rails or bed racks. Verify clearance with your specific bed height and accessory placement on your truck.