I used dupli-color chevy blue. They also have GM blue which is a little lighter. I think my engine was GM blue originally but I liked the chevy blue better. I thought of using chevy orange but everybody has it. I want to go for a 60s hot rod look with this truck. I want it to look Original with a little modifications. Here is a pic of the paint. It laid down good after I primed it. As you can tell my engine look real bad and after some scrubbing and paint it came out good. I have been getting good comments about the paint job. Good luck!