Todd:
We gotta reverse engineer it. How much water are you looking at moving? (look at the sprinkler sizes and GPH ratings for a start)
A trunk like is just a larger diameter pipe/hose that comes out of the pump, and you tap off of that (branch off of it) for the different outlets (sprinklers or hose bibs).
A deep well or deep well jet pump is not the ideal pump for your application. Depending on the amount of water that you need, a bilge pump,
submersible pump, a
sprinkler pump or a
shallow well pump might fit your needs, depending on the amount of water that you need to move.