will this work

[Paul_J]

I'm using those 4WD spindles in the rear of a project I'm building. I just checked the stock Mustang II uprights I have and the S-10 lower ball joint is a little bit larger and the Mustang II upper ball joint is a little larger. Clear as mud? So you may have to find a lower ball joint with the larger S-10 taper and can have the upper ball joint taper reamed larger for the Mustang upper ball joint. Speedway sells the reamers but race shops should be able do do it for you. Probably provide the solution for the correct ball joints. Do you have the A arms with the screw in type? I know speedway sell several sizes of the screw in type. Forgot to mention, the 4WD spindle lower ball joint goes in from the top, not the bottom.