High Flow Submersible Pump Options

[Werbo]

Due to space restrictions I cannot add an external pump such as a Dart or AmpMaster.

What options are there out there for high flow submersible pumps that would compare to a the external Sequence Dart? Looking for something that is 2000-4000 gph to hook up to 2 sea swirls.

Please post your opinions, past experiences and pros & cons related to products.

Thanks, Tyler