if you are desperate I have some (5 or 6) non oem Granatelli blaster COPS in my garage you can borrow to get you going. If you ever come up London way you're elcome to collect.
Otherwise I did recently see these:
http://cgi.ebay.co.uk/IGNITION-COIL-...item4cf2dabd81
and
http://cgi.ebay.co.uk/FORD-MUSTANG-4...item519801a3b4