Water Pump Replacement Recommendation?

I just installed the 'sound-proofing pump pad': a cork center pad with rubber vibration pads glued to both top and bottom.  I screwed the pump through the top rubber pad into the central cork pad.  The screws did not extend any further. The pump pad was cut to a 6x6 inch square.  I then screwed four additional screws from the pad down into the flooring.  I also installed foam pipe insulation from both sides of the pump to the next pipe fitting (used about 9ft).
I estimate that the sound insulation cut the pump noise by about half (no sound meter).  The 'clattering' has been mostly controlled...but you can still hear the pump running both inside the Pod and when standing near the Pod (on the pump side).
But at least the pump probably won't wake up adjacent campers if I need to flush the toilet at night.
My total cost was about $40.00 which included shipping for the vibration pad.

From where did you buy the pad?