Someone posted this on WikiAnswer for a 1990 302:
http://wiki.answers.com/Q/What_is_the_firing_order_for_a_1990_Ford_302
The rotor turns counterclockwise and the order depends on if you have an engine with a roller cam or a flat tappet cam. If it is a flat tappet cam, it is 1-5-4-2-6-3-7-8. If you have a roller cam, it is 1-3-7-2-6-5-4-8. You will either have an H.O. motor or not. H.O. is roller motor.
So at the very least I need to confirm firing order.