Hardbody ball joint taper

I'm going to be build new a-arms for my datsun project using hardbody spindles and I'd like to use screw in type ball joints. Does anyone know the taper or a part number for some balljoints that will work?

Moog part number K772 matches the hardbody spindle taper. They are a thread in joint so they look clean. You can buy the threaded mounting rings for them from Speedway or Welder Series for about $20 a pair

Thanks, I just found the info after days of searching. The K772 is the top and the bottom is a K727. Just in case anyone else is interested.