RC because they both are over sized leveling kits. plus you save 300 bucks in the beginning. I run 3" level with diff drops and RC UCA's rides decent...but if i had a chance id do the 5" kit from the beginning...flat angles n bigger lift and same price as the zone 3.5" kit almost....also you will be able to fit around the same size tire between the 5" and the 3.5" kit because of the additional track width the 5" kit puts on your truck from the spindles....
I agree with these guys, I've got the 4" Readylift SST kit and that was put on by the dealer and if I had my choice I'd do the 5" kit or 2" level with a 1.5" BL. Better angles and same price or cheaper.
Thanks for the Info just thought there was something different with angles that zone corrected ..,but I have the 2.5 all ready.,.and going to get rc body 1.25" lift.,..and getting bilstein shocks on 2nd setting and call it a day
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