Building custom upper A arms for my Dio Tipo Alfa project. Need to find a different upper BJ so that it will be adjustable for length. The common trick is to use tie-rod ends. Do NOT want to use Heim ends. But to do that I need to find dimensions for the taper. I've tried to measure but it's...

I bought a bunch of stuff for my racing car (69 GT) project, and had these incuded in the the box (they where described as reverse joints) : I have no idea how they fit? can anyone shed some light or have more information on these items (in the foreground) :confused: