AJ's Camaro Splitter, wings and canards are now available, but his stuff is carbon fiber so its on the expensive side. His splitter design is not a quick release type. I also like his splitter rod design which are compressible and allows for raising the splitter some to lock it higher for loading on the trailer etc. You can also have him customize it some to match your needs.
https://ajhartmanaero.com/camaro/