if your jobber sells dupont they can call the dupont library if they can't pull up a formula. i do this all the time if i can't pull up a code from my dupont system. if you have a section of the car that still has the color on it, they also have a camera called the profit. they can take a picture of your color and down load it in the computer and it will come up with the formula from that
tell them you want it mixed in "chroma base" then buy a good high solids urethane clear to go over it