Just got my hinges, Thanks ragragtimetime.
I hit em with a wire wheel and a grinder, now they are soaking in 60/40 distilled white vinegar & water to loosen the rest of the rust. I will soak them in plain water and baking soda to neutralize the acid once I am satisfied with the removal of rust. Now that I have them I can see the hinge on my truck with the spring in it moved enough to bend that pin where the rubber cover goes.
after grinder WW.jpg after wire wheel.jpg in 60-40 vinegar&water.jpg