doubleG,
To answer your original question about the info on the engine tag, YES, there is a book to decipher what it is. It is called the Ford Master Parts Catalog, or MPC. Same book that your parts counter dude had....
I have a copy, so if you would like to shoot me an email with all the tag info on it, I'll see what it will tell us!
My guess is that it will say "M" or "Q" code Mustang/Cougar with manual transmission. It also has the date on it, size, and something else that I forget at the moment......
Steve
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