Will this bolt directly to my existing dash frame without modifications?

Yes. This bezel mounts at factory rocker and support points — no drilling or cutting needed. Line it up with your original mounting holes and secure it.

Does this come with the fasteners I need to install it?

The bezel assembly ships as the main component. Test-fit it first, then use your original fasteners or pick up clips and bolts that match your truck's setup from a hardware supplier.

Can I paint this before I install it, or should I wait?

Either way works. If you're matching your dash color, you can prep and paint it off the truck — just let it cure fully before installation. A light scuff and primer will help paint stick to hard plastic.