Do these bolt directly into factory mounting points?

Yes, these mount at the original headlight attachment points with no drilling or bracket modification needed.

Will the LED DRL work if I swap in different bulbs?

The LED daytime running light function is built into the housing itself. You can replace the H13 low and high beam bulbs with your choice of halogen or LED bulbs without affecting the DRL operation.

Do I need to do any wiring or will these plug straight in?

Wiring configuration not specified — test-fit the connector before final installation to confirm compatibility with your vehicle's headlight harness. Minor adapter wiring may be needed depending on your model year.