x2565bbchevy said:This is the factory spacer that goes inside the rear lower control arm, it is there to help stiffen the control arm and keep it from being crushed when tightening the sway bar to it.
The flat shims would usually only be needed if there is still a gap when installing the rear sway bar, other than that I would use the correct length bolts( a good time to upgrade to grade 8 bolts) use washers on both ends and self locking nuts hold up well also.
Im right there with you :?:pontiacgp said:I got confused with this...stock tubular control arm
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