Will these side skirts affect jack point access?

Yes — before installation, identify your vehicle's factory jack points and verify clearance under the new skirt profile. You may need to adjust your jacking approach or consider a jack pad to distribute load safely. Plan your service routine before final install.

What's the best way to prep these for paint?

Sand the surface with appropriate grit to your chosen finish specification, then apply your primer and paint system. The FRP substrate is stable and takes paint well once properly sanded and prepped.

Do these change ground clearance?

These rocker panels add minimal extension to the lower body line and do not reduce ground clearance. The GT-R styling is achieved through body line definition rather than added bulk or dropped ride height.