Hello James The info you need to know is at AP Racing :
http://www.apracing.com/roadcar/clutch/epmods.htm
They give you all the pictures and part numbers of the bits you need from ford (you can order the bits from ford

) and tells you exactly how to modify it. Hope thats a help
If you still have RST "RPO" then it had a AP2000-8 organic clutch fitted and new clutch cable, if thats any help