Do I need to paint each piece separately before installation?

Yes. Sand and prep each panel individually, then apply primer and your chosen finish before assembly. This gives you cleaner seams and easier handling during the painting process.

What do I need to sand these panels with before painting?

Sand the entire surface to remove the gel coat and create texture for primer adhesion. Start with a coarser grit and progress to finer grits, then wipe clean. Follow your chosen primer and paint manufacturer's prep instructions for best results.

Will I need gap filler or seam tape between the kit pieces and factory panels?

Depending on your fitment and installation method, you may want to use gap filler or seam tape at body lines where the kit meets factory panels. Test-fit each piece first to assess the gaps, then decide based on your desired finish quality.