No need to change UCA’s if you keep the factory shocks. Perch collars just move the stroke of the shock higher up, but eye-to-eye shock length is the same.How much lift does the GRT perch collars give you? And did you add UCA?
I have a 23 with HOSS 3.0 and am thinking of RPG or Foutz collars and 37” KO2’s
Perch collars allowed me to run 37x13.5”Cooper’s on my non-Sas Badlands.
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