The best matching paint is by Martin Senour sold at most NAPA stores, but the bad is they no longer offer it in a rattle can. Their old part number for the rattle can is #7887, and their paint formulas for a spray gun are #90T 9954 or #99L 9954. Both are enamels, but the first one is acrylic enamel which most NAPA dealers can mix. The later is a synthetic enamel which very few dealers still stock. I have not found a suitable rattle can color available anywhere, but then again I haven't painted an engine with spray paint in years, it is all done with a spray gun.........................RatPack................