How do you replace locking hubs 0n 2001 f350 dually with mile marker hubs?

I was at the Fleet Pride in Kirkwood, NY yesterday looking for a new set of hubs for my '01 F350 Dually and all of their part numbers were the same for the older style axle (70's-97-8ish) and the newer super duty trucks and they brought a set of Mile Marker hubs out for me to look at and they were for the older style axles when they started making the new super duty style trucks in the late 90's there were some changes made they had a metric wheel stud pattern metric studs and nuts and automatic vacuum operated hubs that were also able to be locked in manually by turning them 1/4 turn they also changed the way they were installed the new hubs instead of having 6 allen screws (or 3 allen screws on some models) to hold them they were pushed into the hub housing and just had a snap ring that held against the outer edge of the hub itself with no additional hardware so if they have the allen screws they will not work on an 01 and good luck finding them other than at a dealer dually these hubs are different than hubs on single rear wheel vehicles and the only ones I have heard of on forums or anything are Warn they are manual and pics show hubs with 6 pieces of hardware so I dont know about them either the hubs for my Ford are $301.00 each here so good luck.