I don't recommend the Z1 front upper control arms. You may not even need them. If you do, they aren't adjustable once installed. So you basically hope that you get it right (camber and caster) before they go on. Its just not a good system. SPC came out with a different version of their FUCA's which are probably better for adjusting. I had Z1, now I have SPL FUCA's.
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