Bendix makes the Ford peices, I used one from a SN95 when I did my 4 disk conversion along with the SN95 master on my 91, which I ordered at Advance, it works fine, as of yet. the bendix peices are more money but less than Ford.
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Ryan
1990 Mustang GT (In Process)
1993 LX Coupe (Daily Driver, but just choose not to)
2005 Excursion (Big Pig)