Casting number on the 360 block in my '73 W200 crew is 3418496 6 360. Color is NOT Mopar Blue, like my '76 RC's 318, it is orange, and does not appear to be repainted. Per the FAQ here, this casting# is for years 1971-74. I've been told that 72 on would only be Mopar Blue. Just curious if both colors were used on small blocks in the early '70's.