Question on bbc, reverse rotation wp, and Vintage Air

[Extended Power]

My engine uses a Stewart Warner aluminum reverse rotation water pump, and has no bypass hose from the intake to the pump. (No port at all for one either)

So do I need to make a bypass, or an "H" between the two heater hoses on the Vintage Air? (It completely shuts off the coolant flow with a motorized valve)
The stock heater allowed coolant through the heater core at all times...it just didn't let the air pass through it, and blow heat into the cab...but the flow still remained.