Looking at the graphs on the Swiftech site, head loss is pretty similar to the MCW5002 at 0.3, 0.5, and 1.0 GPM flow rates (first 3 points). So I'd say the MCW6000 would be fine w/ 1048. A good match in fact for those wanting a quiet system. If you are performance minded, though, it seems like there is some additional performance from using the higher pressure pumps.
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