That depends on the rims you want to run and what year car you have. If it is a Fox 5.0 car then the Lincoln Mark VII will bolt right up and you can use the stock spindle and calipers. It fits a very limited selection of rims due to the large diameter of the hub. Matt has a really comprehesive site on five lug conversions here:
87-93 Mustang 5.0 Brake upgrade pages. Improve your 60-0 times!
Darren