I started routing my heater hoses today but not sure if I have them hooked up correctly.  Please take a look at the attached pic and let me know if I am right or wrong.  I currently have the hose from the water pump attached to the upper hose connection to the heater core.  Is this correct?   Thank you in advance.

Thank you for your reply.  I agree that it doesn't matter which way the coolant flows.  My real concern is which rigid tube should be in which position, and namely I want to be sure the one with the tee is in the correct position.  After searching (pic attached), I believe that the factory intended for the rigid tube with the tee should connect between the water pump and the top of the heater core (outlet).  The rigid tube without the tee connects the top of the engine/thermostat to the bottom of the heater core (inlet).  I am going to route the hoses that way and if there wasn't that tee and line that goes to the intake, it wouldn't make a hill of beans. 

The way it appears on some under hood pics I found is:

Thermostat housing to bottom of heater core.

Water pump to top of heater core.  This is the rigid pipe with the tee that goes to the intake manifold.

Thanks for the info...Since I have the '80 intake already on the motor and have the stock plumbing, I will just put it back together the way the factory did it until something fails.  At that point I would probably do your modification.  Is the line to the intake for the choke? My buggy will only be run in the Summer anyway so as long as it starts and idles, the warm up period isn't too much of a concern at this point.  We'll see what the drivability is like next year when I get it running.