CHolman,
Whether the AirDog is a pusher or a sucker depends on where you put it in the fuel stream. Designed and sold as a pusher but I have mine mounted in the bed of the truck so does that make it a pucker or susher??? It sucks from the tank mounted 2 feet below it and then pushes to the VP.
All fun aside the AirDog is a fantastic pump, designed and built much better than other electric pumps.
At the present time the AirDog comes with a coupon for 2 extra fuel filters and one extra water separator which makes the $ very close to the FASS.
PM for the number of an AirDog dealer.
Trent