4056-1 - 1964-1972 GM A-Body Front Upper A-arms, Adjustable 2010 Ford Mustang use outside vendors for platings/coatings

use outside vendors for platings/coatings and laser cut parts

Adjusting the pinion angle is crucial for reducing wheel hop

Note: This item is for vehicles equipped with out air condition

This heavy-duty panhard bar enhances rear stability

These arms are designed for use in high performance street and race vehicles

4056-1 - 1964-1972 GM A-Body Front Upper A-arms, Adjustable 2010 Ford Mustang use outside vendors for platings/coatingsNote: Upper a arm P N 4056 1 includes standard height ball joints and must be used with A Body tall spindles. In most cases shims are not needed. Shims may still be required on some applications.