When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
Certain options will change the engines color sometimes. One example is my Roadrunner where it came with A/C and the original 383 is orange, but because it has A/C it could have been blue instead. That's where fender tags and build sheets are useless, because they don't have which color the engine originally. There may be a way of finding out, but it's probably not easy unless it's the original engine and has some of it's original color on it.