Ball joint thread size?(making custom spacer)

Hi all,new here and have a few questions.thanks in advanced.
I installed my front coil spacer lift and i am getting terrible tire rub on the uca. The po put 6 to 5kug adapters with tundra rims and 33s.the rims bolt up almost at the face of them (no offset)which is one big problem. I am considering making a ball joint spacer /spindle spacer to bring the uca back above the tire after the lift and to stop the rubbing issue. I need to know what the thread size is for the upper ball joint to make this spacer.im basically going to use a bolt extender to do this.

 

Did you ever figure it out? Currently trying to find the same information