Found a site which supplies what appear to be the correct fixings although i've not ordered any to test the theory:
Stagonset Online Stainless Steel Fasteners
Stagonset Online Stainless Steel Fasteners
Although it's useful to note these do not have the same size head diameter.
The Ford sizes are:
3 x M6 20mm - 12.7mm head diameter
6 x M6 12mm - 15.0mm head diameter
The ones in the link only have a head diameter of 10.5mm
If you go for the version with a flange then the head diameter of those is 13.4mm which is an in between size for the originals.
Stagonset Online Stainless Steel Fasteners
Stagonset Online Stainless Steel Fasteners
Although it's useful to note these do not have the same size head diameter.
The Ford sizes are:
3 x M6 20mm - 12.7mm head diameter
6 x M6 12mm - 15.0mm head diameter
The ones in the link only have a head diameter of 10.5mm
If you go for the version with a flange then the head diameter of those is 13.4mm which is an in between size for the originals.