Important to note that the type of corrosion is called galvanic corrosion. It happens when aluminum is contaminated with iron/steel. Different than corrosion on steel.
I've done the same as Barry said in the past on a lot of those Fords. I prefer to use 180 instead of 80 as aluminum is softer than steel and you can remove a lot of it with 80 if not careful.
The quick collision way is to use etch primer after sanding. No aluminum prep needed. I've used the PPG SX system as well. If you do it this way if you don't already have some on hand, it's expensive. You can use a phosphoric acid product in place of it. Make sure it's neutralized. Then two coats of epoxy.
Make sure that you use fresh paper. You don't want to use paper that has already been used on steel. You should also take care to have your work area free of any steel residue or remnants as steel contamination is the cause of galvanic corrosion.