225 Rebuild from scratch

I do have a factory service manual. Was wondering if the factory crank and rods from a 66 225 would be suffice to hold 9-12 lbs boots. But this isn't about that ATM, I want to run it first before I go that far. My main concern in this is how strong are the factory rods and crank. Slantsix.org says crank is pretty strong. But I can't find anything about the rods. They also say that the 70 something and older heads won't flow like the newer ones. I just want to build a strong reliable daily driver. That if I do decide on adding boost or whatever to it I can safely do so