Do I need to paint each piece separately before or after installation?

Either approach works. Many builders paint individual panels on a workbench for better coverage and faster turnaround, then install once cured. Others fit everything first, then mask and spray as an assembly. Paint off the car if you have workspace; it's easier to handle bare panels and ensures uniform finish quality.

What's included in the box — just the body panels, or hardware too?

The kit includes the four FRP body panels. Fasteners, brackets, and mounting hardware are not included; you'll source those based on your installation method and existing attachment points on your vehicle. Reference your OEM body panel mounting locations to determine what hardware you'll need.

Will these pieces fit around existing sensors, bumper cutouts, or fog light openings?

The R34 body kit is engineered around OEM hole patterns and sensor locations on your vehicle. Before installation, dry-fit each piece and verify clearance around fog light buckets, parking sensor pods, and any custom wiring. Minor trimming or custom drilling may be required depending on your setup; mark and test-fit everything before final fitment.