Hey guys. I have a gopro hero 7 black and want to use a 12mm lens. But to use it I need the backbone version which is $750 to $800. I ain't gonna paid that much for another gopro. I try looking for the backbone kit to install in my gopro 7. I cant find anything. Do they even sell the kit without the camera? I just need to rib cage whatever they call it. Isnt it just a case that covers the gopro or do I need to take the camera apart and modify to fit the rib cage? My goal is to use a 12mm lens on my gopro 7 black for sideshot to record slowmo.