I am installing a 396cid in my 66 c10 swb fleet. Although these vehicle were never available with this engine option I am building it as possibly the factory would have done it? This project is a complete restoration and I was wondering what would you guys think a correct/good color would be for the engine? I believe the 283 was grey and the 327 was alpine green..Thanks for any imput. I just don't think orange would have been the color. Hans