From what I gather (for availability reasons mainly I guess) people put 1986-1993 water pumps on earlier 5.0L engines (in my case a 1985 4V) but I often see "will fit previous years but some modifications are required".
I'm only looking at Ford Performance/Ford Racing brand water pumps and (as usual) they only offer them for 1986 and later.
What specific modifications need to be done? Would I need a new timing cover also?
Would appreciate any insight & thanks in advance
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