Hey Ed
Wish I saw this before I did mine I’m a manager (one of many) at a ford dealer in Orlando fl and the ford racing ones are $160.00 my cost each so this is a great deal for $150.00 for two.
Actually that is $150 for a pair of rear hubs....the part pressed into the knuckle in a 5 X 4.5" bolt pattern. Then you need the front hubs (also in a 5 X 4.5" bolt pattern and with ABS Sensor ring) in addition to do a swap to Mustang style wheels.
You should replace the dust shields that are between the end of the outer CV joint and knuckle as well as new hub retaining nuts all the way around.
A perfect time to switch to new rear wheel bearings at the same time since it is not that much more work to replace the bearings since you will be pressing out hubs already.
The brackets Ed is selling is for swapping to the Mustang rotors 13" and PBR dual piston calipers in front (obviously not needed at that end though you need a 93 and up spindle up front) and Mustang 11.65" rear rotors using the stock SC caliper.