340 ...Original pieces??

Hi Folks,

I pulled my oil pan, windage tray etc. and am wondering if the internals (Rods, Caps etc appear to be original. Note: This is the first Mopar SB I have ever owned/worked on, so forgive my ignorance. :sign3:

The block is stamped "9.27.71". Looks like a few caps are stamped "11.24.71"



Others are stamped like this: (Is this normal?)





Also, is the crank forged or cast. My research uncovered varying answers. Some say Cast, other say the switch took place in April of 72....?

Thanks as always for helping a new guy learn about Mopars!

Pat