I just wonder how many would know the difference in the Mopar heads?I just about bet unless you asked them or some of your friends(We all have those)ratted you out,unless you was running against another Mopar racer no one would ever catch it.Put a Big block Mopar engine in something other than a Mopar and see what engine everyone will think you have. I can tell you because I run a Big block Mopar in a dragster for years,and everyone even other Racers always thought it was a small block chevy.