I was just talking to that guy you gave your fuel pump to. Very nice of you. He is a great guy!
Anyways... I just installed a high pressure Tempest (injected) pump (unlike yours) as a replacement for my original Lycoming.
I have yet to flight test it, but my pressure has increased from 25 to 29psi and the quality of the Tempest appears to be good!
I wouldn't hesitate to buy the Tempest if I were you.
Maybe I will come up and visit you sometime? I have another friend in the area also. Feel free to stop by here and say hello also!