Well i ordered a GMB high volume water pump from summit the other day and it arrived in the mail and i opened it up...well it was shit to say the best.
I cannot believe it passed quality inspection if that company even has such a thing. The fastener on the pulley itself had a ding like somebody smashed it with a hammer, the metal plate that is welded to the fan blades was completely off center with some of the crappiest welds i have seen they weren't even consistent and had white residue build up behind the welds that flaked off. Also if you held the pump and spin the pulley you could see the fan blades getting closer and farther to the housing...also not centered, the inlet and outlet had rough burrs on the casting...overall just due to that pump i will never buy anything from GMB again...needless to say i returned and ordered the flowkooler pump for an extra $45