I think if your building to stock HP or a little better, the cast rods are fine if you resize the bearing journals and use ARP bolts. That is my opinion only.

I have a set of dished pistons which I removed from my 68 400 with #16's. The CR that I calculated is 8.3:1 The dish was 31cc's. I am going to flat tops with a CR of 9.6-9.8:1 depending on where my heads cc at.