ngk or autolite platinum series
Yes, of course you can use both Motorcraft and Autolite plugs in ANY Ford engine, since those are both MAJOR Ford brand names! Actually, your first problem is to find out which Ford engine you have,...
Need to know the year of engine. They are all different. The brand should be AC Delco according to my father, Champion are for Fords!
personally I would use an iriduim plug.
NGK Iridium if you don't mind paying $9 or more per plug. I personally like Bosch and have Bosch Platinum +2 in my 92 Accord.
a diesel engine uses compression and has no need of spark plugs