Depends on what you want them for. They move a lot of water but don't work well for pressure. There are some issues with the seals on the shaft and Tom Jr. has tried to make it good with everyone.
That sounds like the same configuration I had with a AmpMaster for a while. I had it feeding two 1" returns.
The seals gave me trouble, I'm old, I swapped to a Iwaki 100.
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