[Musclecarkid]

I asked the "king", and he said early production carbs[usually 1st 2 months of production did not receive the two letter suffix. He also said no 96X 97X 98X 99x 4557s have the GG suffix[90x was about the cutoff on 4557s to receive the GG code]] ,also that it crossed over to other carbs as well...I asked him about the dec 69 without a GG code and he said hes never seen one that late w no GG stamp...Email him direct if you need any more info..Kid