ABS Fairing Repair:
https://faq.ninja250.org/wiki/Plastics_repair_with_ABS_cementYou can also make ABS cement with ABS scrap bits and acetone.
Repainting:
https://faq.ninja250.org/wiki/Painting_cheaply_with_Rust-OleumI've used these techniques to reassemble and refinish a fairly broken up fairing.