I found a pic of the '51 you are looking for

(and a look-a-like)
That "look a like" is what the split use to be. Its a 74 owned by the same guy in Japan. The 74 body was rotting away underneath. His decision was to replace the 74 body with that of a 51, so the 51 with the 67 front fenders is on a 74 pan. Confusing eh??