I'm tired of waiting so.....,I ordered a 5 gallon 610 tank yesterday from JustGasTanks.com I found a thread somewhere the other day, (might not have been on cafehusky) about fitting an external fuel pump to the 630. Buggered if I can find it now. It listed a pump that should do the trick. P5000 or GP5000 or something like that. I'll keep looking.
Good luck. finding room to mount external fuel pump wont be easy but if you replace the bat with a small lithium Ballistic 8 cell might just give you enough room. Not sure of the specs of stock pump but NOS Small Displacement Fuel Pump 3-15760NOS might do the trick http://www.mpsracing.com/products/MPS/FuelPumps.asp
Keep in mind the fuel pressure at the rail has to be 45psi. The stock assembly has a regulator that dumps back in the tank. .
Good luck in advance but I think you're in for many headaches with this project. Every attempt I've seen at it requires a small aux tank for the fuel pump to be mounted into. So now you have an extra vulnerable tank, more connections to go south and even a more ugly setup than a Safari, less capacity, fuel weight sitting higher and no bonus of radiator protection. So Safari or go home IMO. _
We should encourage SWM to make a larger OEM tank option for the 650 that also fits older 630 (610?) bikes. The 650 does not compete technically with the 690 - SWM should compete on price and options.
like husky ktm rely on safari and other aftermarket tank makers ... Ktm have more quality options like rally raid but i would think there has been 5 - 10x more 690's produced .. You never know if swm get a descent of number of bikes sold hopefully aftermarket accessories will grow and continue .