Im just asking im pretty sceptical myself but could it be done I mean marlin runs what like 3 case with 4.7 in 3 or 2, yes i know hes all 23 spline but with 3 4.7s thats allot of stress on the rear case and if marlin can pull it off with 3 4.7s and 23 spline cant I pull it off with 3 stock geared cases and 21 spline??