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I got this same pump in a kit I ordered from a seller on EBay. The kit has the guages, connectors, pump (same pump as your Harbor Freight pump), etc. It only took 2 days to receive the kit delivered to the house.
One thing you should know is that the pump is powered by an air compressor ( your shop air compressor). The compressor has to be capable of delivering 75-90 psi in order to get the max 28-29 in. Hg. I have shop air compressor so it is no big deal for me.