Insure that you have done some sanding on the frame before you do any spraying. The 400 grit mentioned above is good. You need to have a surface that the paint will adhere to. Thus the sanding. Also, call around to some of the automotive paint supply shops. They cater to the local body shops. You can now purchase the high quality automotive paints in spray cans. Then you will be getting a good quality paint.

All this said, give the Color Factory a call at 1-800-62-GLEAM. He will paint your frame for $130.