Well I went and did it. Needed to replace the lower ( water pump to radiator) hose. Got it off and proceeded to remove the heater hose connector that taps into the radiator hose. Rusted solid and snapped off. Seems my options are;
1. Find a replacement connector
2. Drill out the rusted broken thread, re-tap, then figure out how to make a new part.
3. Leave the new lower radiator hose untapped and block off the heater at the right side of the block. That will of course leave me with no heater (bummer). Since I live in Northern California, and the cab is pretty cozy, shouldn't get too cold.