Call Mahle in Tenn. Ask for Cathy Dornail at 423-581-16603. She has been lots of help to me in the recent past. Those numbers appear correct. P.S. They also have the large pin turbo pistons for the 6.9 motors but you will need aset of turbo rods (big pin 33mm) to make them work. They can be found for about $45.00 and no core charge.