I have no experience with these pumps, but FABO member "Mad Dart" speaks highly of these units. He knows alot about them, and to me, they make perfect sense and can't think of a reason on why not to use these...Here is a quote from the man himself:
"Swap that POS Blue pump for a Walbro GSL-392, Way Quite and will out perform what you have easily. The Walbro is good for about 600HP and you can barely hear it running.
$100.00 Problem solved."