I have a 63 chrysler with the 741 carrier(open)i want to put a posi in that rear end housing but from what i,m told i need to add axle shims when your going from a open rear end to a posi...mancini does not sell those shims..any old fart heads know what thickness shims i need....my chrysler books say i need them but they don,t say how thick or a part #(these axles have the big nut that hold them in)
thanks in advance