They are all availible from ford apart from the rear clips. 16 are a shocking £1.75 each last time I ordered
Number 17 is M5 a riv nut that you can get anywhere, the funny thing is the part number on fords part system is wrong for this and if you try and order it you get a plastic doorcard clip
whats even funnier is the cosworthshop guy on Ebay that sells the plastic door card clips as part of the set