5 lug swap - master cylinder changes needed? August 15, 2007, 05:13:42 PM Ok, I've done enough searching and reading that my old eyes are getting more blurry than usual.... It appears I've lined up all the parts I need for a 5 lug swap on my 86 using the Mark VII calipers and the Ford Racing rotor kit up front and a 96 Mustang rear end. Other than the lines, do I need anything else? Like a master cylinder or maybe a proportioning valve? Tips, hints and free advice from those that have done this are also welcome at this point... Quote Selected