Twiz, hey your from New York right? There is a place about 30 minutes from where I live, in Schenectady, NY that powdercoats. Its called 'Powder Tech' and I have personally had many items done there. Outstanding job! I will get their phone number for you or you can call information and get it. Ship them your springs, they will sand blast them, powdercoat them just about any color you want and ship them back to you. Just for your info, when I was managing a body shop back in the early 90's I painted my springs with PPG automotive paint, added some flex additive and they lasted for 3 years with no problems. Then I sold the sled.
'HAMMER DOWN !!'