Hey guys, I was out in the garage earlier looking over the block for my '68 Charger. The block is the original matching numbers block and I'm a bit confused on some of the numbers. On the front pad by the intake it is stamped: D 440 HP 410. Now from what I understand the 410 is the date code, meaning it was assembled on April 10th, 1968. Ok, so looking at the stamped number on the pan rail underneath I have: PT440S24292606. If the 2429 is the date code, that comes up as March 22nd, 1968. I thought that the top and bottom stamped date codes were supposed to be the same, not almost a month apart. Am I missing something?