George C - Thanks!

After more days than Id like to say I traced down this info from your lead:

Our rods are bone-stock powdered metal GM units, P/N 12577583, maintaining the stock 6.098” center-to-center length (as mentioned earlier, with floating wrist pins), upgraded with much stronger ARP rod bolts. These rods were used in 2005 and later LS engines, upgraded to floating wrist pin fitments

The site article had some valuable info including their parts list. I will do a check on the rods today and get back w/ the info

Brian