I know that for the TF trucks, CPP says you can use the original wheels if you get spacers (3/8"?). I personally dislike wheel spacers, but a lot of people run them just fine.
I don't know if their AD kit works the same way, but I suspect it does. Can't hurt to call and ask.
As far as the master cylinder, yes you need a new one. It is fairly easy to get a manual cylinder that just bolts up in the stock location.
If you want a power booster as well, then you have to get creative. Look at Gord&Fran's installation. He moved the mount toward the back of the truck and extended the rod but kept everything else the same. That seems like a clean solution to me, even though it does involve some modification. From inside the truck, you would never know.
