imho I have no interest in the discussion the 422’s will just not fit without making modifications to the frame or the shock! I know this is a touchy subject lately ! Best of luck to those installing them looking forward to being proved wrong! Yes I could modify some shit to make it work but I question limitations and speciations, on strength and stability ! I own a bbc with progressive shocks installed and a rigid so I have no interest in either. Just stating what I witnessed and tried . If it works hell yeah to the guy who cracked the code and not the frame !