Ford Repair: engine type ?, ford mustang, casting numbers

Question
STEVE I HAVE A 1968 FORD MUSTANG AND I WANTED TO KNOW IF IT HAS ITS ORIGINAL ENGINE THE NUMBERS ON THE INTAKE MANIFOLD D50E-9425-GA PLEASE E-MAIL ME THANKS.

Answer
Mr. J-

  Well...it's possible.  But the numbers on the intake are the casting numbers for the intake, not the engine block.  The casting numbers for the block should be on the back bottom of the block next to the starter.  If you can find that, I can tell you what you have.

Steve