Most rusty suspension parts and engine bay parts are sandblasted and powdercoated. I've been assured rust will definitely not return after the proces. And as you can see, the parts look like new. Tip: If you intend to have some parts powdercoated yourself, then it's wise to turn some bolts in every tapped hole. Because if a tapped hole is powdercoated, then it'll be very difficult to turn bolts into it, because of the thickness of the powdercoating.

I don't have photos of these parts before they were powdercoated, but as you can see, they look like new.