i run a set of richmond 4.10's... no noise, easy to get a pattern. motive is good.. OEM is gonna be the best, but i doubt they offfer a 4.56
i run a set of richmond 4.10's... no noise, easy to get a pattern. motive is good.. OEM is gonna be the best, but i doubt they offfer a 4.56
02 Sierra... motorless for now.
02 SS.. stock bottom 4.8, 241's, 224-220/116+4, 918's and pushrods, front mount turbonetics 78mm, HKS GTII, TiAL, eBoost2, Yank PT3600, Performabuilt 60e, solid motor mounts. Tuned by me with HP Pro and LM2/AFX
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