Just tagging on to what Jerry said...what's odd is that the one outlet pumps are getting harder to find. Seems like most of the auto parts places are just carrying the two outlet. You would think the opposite would be true given that they bypass thermostats aren't made any more. Hmmm...
Wrencher88, just put a 1/2"NPT plug into one or both of the outlets and you'll be good to go. If you have a heater, use either one and plug the other.
I like to use brass plugs with anti-seize on the threads because iron pipe is prone to galling in the thermostat housings.
Matt
