The reason I ask is I want to put an electric water pump on my 5.0 ltr roller engine but not sure which model to get cause the last peanut thought it would be a good idea to grind off the casting numbers and I don't know what year it was cast. I need to know if its pre 94 or post 94. I remember it having xxx in the valley under the manifold if that means anything. Is there a way of telling which year ? Cheers.