Needle wheel pump that fits 24g NC

[revance]

I just bought a HOB skimmer for my 24g nano-cube, but the pump doesn't fit in the rear chamber. It is just a tad too long (the baffles are 6" apart in the back and the pump is ~7")

So my options are:

Put the pump inside the display area (I really don't want to do this)
Cut part of the baffle out so I can fit the pump in
Replace with a smaller pump

I figure the easiest way to do it is to replace the pump with something a bit smaller. Does anyone know of a good needle wheel pump ~200gph that will fit in the rear chambers of a nano-cube?

Any other ideas are welcome.

Thanks in advance.