You could always try it and see. I know with the Sequence Reeflo pumps, they have 1.5" inlets/ 2" outlets I believe. I know people reduce them at some point.
As another alternative, Panworlds are great pumps and I believe that Sequence was supposed to release a line of pumps with 1" inlet/outlet.
*180 gal Display, 100 gal basement sump, 33 gal refugium, 3x250 MH, 2x160 VHO actinics, zoos, some softies, LPS & lots of acros and other SPS.
*100 gal prop tank plumbed into main system w/ 2x96 PC lights and 1x150 MH,