Do these mount using the factory holes, or will I need to drill?

These mount at factory rocker points — no drilling required. Use the provided hardware and you're set.

Will this interfere with my running boards if I already have them installed?

Step bars and running boards occupy the same footprint. Test-fit before committing, or confirm your current setup with photos before ordering.

Does the textured finish need any prep or maintenance after install?

The finish ships ready to bolt on. Wipe down with a damp cloth after install to remove any warehouse dust, then you're done.