My father in law has a 95 dodge, and the water pump is bad( bearing noise and weeping antifreeze out hole).We are looking at the Gates GATES-41181 for $41.95, but I see they have the Cummins pump 3286278 for $129.95. Big difference in prices. I figure most people will say Cummins pump. But why would Geno's sell the Gates pump, if it's not a good pump?