I got a cheaper O'Reilly's unit and it made noise after driving all day, thought it would fail. This new fuel pump is nice and quiet, been in service a 3 months now.

Tested before putting in tank. I had to modify the stock gm sending unit which I assumed from the pictures of the product. (It was easy to do with some cutting pliers and time). For the performance side stable fuel pressure at WOT GM 42psi on SVO 36lbs. Did not get a chance to check the static or restricted flow.