this is a bit misleading.
I can clarify. The SJ, blaster, and most of the skis utilizing a 650, 700, 760 and 800 (not 100% on the 800) utilize a 144 mm stock pump. There are other aftermarket pumps avail in 148mm and etc, but the stock is 144mm. The FX1 uses a smaller pump, but I figured that would be obvious to Scoob as he was asking about upgrading his FX1 to a larger pump.
The 650 series, 750 series, 800 series of the kawi skis utilize a 140mm pump. The 550's and etc use a smaller pump, but that would be obvious to anyone asking about upgrading the pump size.
Generally, any ski that utilizes a tripple motor has a larger pump than a ski with a twin.
Hope that's accurate and clears up any confusion.