Welcome to the Stovebolt! Buying new is easy but my 1965 C10 springs were in good condition and I saved money by restoring mine. I can say that my springs cleaned up very nicely too. Here's what I did.
Washed, then 150 grit sandpaper and a wire brush to get the rust scale off. I then painted the springs with POR-15. There are other products that will do the same thing, so it doesn't need to be POR-15. Then I sprayed low gloss black Rustoleum engine paint (not semi-gloss). I used the same process for my frame, suspension and trailing arms.
After all, the springs are gonna see a lot of road grime, so how "pretty" they look is a matter of preference.
Front suspension 1 Front suspension 2 Front Suspension 3 Front suspension 4 Rear spring. Show us some pictures of what you have! Please!
