I know this is going to sound stupid but aside from the intake, carb, and HP exhaust manifolds, is there any other way to distinguish a 318 from a 340? Just trying to learn for when I judge at shows to see if someone is making something look like it is not. I know the blocks were basically the same. Is the heads a different look all together as well? I also know the 340 was orange paint vs. the blue or turquoise color that the 318 and 360s were.