85cobra,
Definitely have to change MC & prop valve, not sure about the booster or metering block.
It seems the 86 SVO/Lincoln MC should be best, and you'll need the 3-2 MC outlet conversion too.
This is probably the most informative:
http://svo73mm.cjb.net/
This is good too:
http://www.nomotivation.com/5lug.cfm
The FMS K instructions are at:
http://www.mustangcentral.net/k1.jpg
(k1 to k8).
This might be handy:
http://members.aol.com/black306/mastercylinder.html