318 engine color

Hey i have a question.I was looking on the Mopar performance site under engine paint.Well let me start here,I bought a "318" for a guy that came out of a 68 charger,and my block is orange and the heads and intake are red.The mopar site lists for the engine year and color it is a 340.is this true,did i score?or am i missing something.I took down the block #its 2536030 318-2.Now i know it says 318 but the color doesnt match.The intake # is 2468960 and is painted red like the heads.If anyone could help i would appriciate it
THANKS
SUBLIME :sad2: