What do you mean "wiring change on one of the boards"?
I mean that the shields connect certain signals to certain pins. You will have to change one or more of these.
Take the boards you want, look at the signals they use and see what arduino pins they use. Draw this out and see if any boards need the same pins, they will.
Then look and see if you can change some. That is do they need any special functions that are only mapped to those specific pins. Try to resolve any clashes. Any pins you move you will have to make sure you move both the physical wires and any referance to them in the code or libary.