Will this handle work with the factory door panel cutout?

Yes. This is a direct-fit replacement designed for the factory mounting location. No modification of the door panel is necessary.

What fasteners do I need to install it?

Installation hardware is not included with the handle assembly. Check your door panel bracket for existing fasteners and reuse them, or source replacements matching the OEM specification if needed.

Can I paint this handle to match custom trim?

The handle surface can accept paint, but test prep and adhesion on a test area first. Sand lightly with appropriate grit, prime if necessary, and apply automotive-grade paint. Finish with clear coat for durability.