I used the spray can paint.Make sure it is the correct stuff for your car.The Pontiac Metallic blue and not the later stuff.I degreased mine,then washed it with a tide detergent paste i mixed up and scrubbed it with a brush and toothbrush.I then powerwashed it down.I did not use any primer.I did many multiple coats though.The exhaust manifolds on mine almost instantly faded.I believe a high heat primer here may help. There is also another paint that many members here swear by: Hirsh paint.

David