[ERA Chas]

While searching for info, I found this thread which touches on many of the points I'm looking for.
I'm an FE guy and need info on 385's for a Chev-experienced builder friend.
Would the experienced guys in this thread mind sharing the basics of bigger 385's? Specifically, iron block selection; what's out there and what's smart to do a 4.500 x 4.500 572? Frpp, Arias, OE? - quality counts. Can you recommend quality rotating components for this size? Obviously BT heads make sense but any other suggestions appreciated.
Not looking to do a Kaase-level engine but quality parts and experienced-based advice welcomed.
Thanks for any help.