Will these panels cover or block my jack points?

No. These side skirts sit on the rocker and do not extend inward into the jack point cavity. Verify your vehicle's OEM jack point location before installation to confirm clearance, but Type W rocker panels are designed with factory access in mind.

Do I need to paint these before or after bolting them on?

Most builders paint after installation so you can mask and blend the gaps cleanly with the door and quarter panel. However, you can prime and paint first, then bolt on — either method works. Just sand the surface lightly before primer and ensure fastener holes are masked or drilled after painting.

What prep does FRP need before primer?

Sand the molded surface with 400–600 grit to scuff the gelcoat, then wipe clean with a tack cloth. FRP surfaces are naturally porous, so a quality primer is critical for paint adhesion. After that, apply your primer and topcoat per your paint system's instructions.