Send it to Moser. They can do whatever you need, and even sell you and put on the Green bearings. I would do the perches myself though. Just incase you want to do a different pinion angle.
Break it apart and send the housing and axles, if they are thick and long enough, to Mosers, and tell them what you want. Large bolt pattern axles and std drums change the housing length to keep the same track width on an "A" Body. They have all the jigs and fixtures. I would have them do it all. It will be right when you get it back. Ditch the Green bearings unless you are making a Drag only car. The original "1967" bearings will last longer and take the side loads for handling. I did this with a truck rear and was pleasantly suprised how affordable it was.