60 LINCOLN

SORRY I MAY HAVE NOT MADE IT VERY CLEAR. HE HAS A GOOD USED SET OF 8 OUT OF THE SAME ENGINE IT IS A 1960 430 LINCOLN ENGINE.. HE SAYS THE CAST NUMBER IS DIFFERENT . THE ONLY DIFFERENCE HE SEE,S IS THE RAISED PART OF THE PISTON BUT IT VARIES VERY VERY LITTLE FROM MINE. IT COULD CHANGE THE COMPRESSION SLIGHTLY AND I WOULD USE THE COMPLETE SET. MAY I ASK YOUR OPINON