Quote Originally Posted by Scooting View Post
Keep the "original" motor - buy you another motor that gives you the most bang for the buck - Have fun driving it and if you ever sell the car, offer the "original" motor to go along with it if someone is picky, plus it cost you nothing to be able to offer that.
I agree, other than a core charge and space for storing the "original" there's no cost, but like Mike said earlier,

Quote Originally Posted by 34_40 View Post
.....it's a Ford and other than date coding each part, it'll be hard to prove otherwise.
There's no true "numbers matching" on a Ford of this vintage, just the date codes that place the time range of the casting. They didn't have the secondary numbers tying to body style, right? Like Scooting says, keeping the "original" to offer with the car later is a nice touch if it's not too much hassle.