tc66nova

I have a SBC with Brodix 12x12 heads that use a lifter valley cover. Since there is no provision for water cross over thru the manifold, I was wondering how to plumb the coolant lines. The heads are tapped for coolant in each corner. Should I run a line across to each head or should I run a line front to rear on each head or do I need to fab up some sort of water manifold that would allow me to do both?

Thanks, Terry C