Simple solution, apparently the mk2 mondeo hubs are a direct change for the mk3 ones so if the bearing dimensions are the same then you could be onto a winner

on the other hand, this was also a way to change the sierra hubs over to 5 stud but there are 2 different sizes so make certain you have the correct things to start off with as you don't wantto open stuff up and then ind it's different

or even worse find out that the parts you need are no longer available to be able to fit