Found a GTX 690 only WC block installed, Can I reuse old Alphacool 12V Pump+res and 120rad

HyeVltg3

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Jan 26, 2013
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I believe I have exactly this one:
http://www.frozencpu.com/products/14981/ex-pmp-182/Alphacool_DC-LT_Ceramic_12V_DC_Pump_Plexi_Top_Reservoir_-_Installed.html

 Bought back in 2012.
I used this Pump+Res with a 120mm swifttech rad for my Xbox 360 Elite WC build...and yes it works (In-game reg temps : 70-75c, WC: 45-52c! best RROD fix but costly ~$250cad parts, shipping was the killer, US >> CAN is like $20 for a tiny bag of fittings) 
Was too scared at the time to setup my FIRST water-cooling build in my $3400 PC. 
I bought a Xbox 360 Slim in late 2013 and have put the old WC 360 away. 

Can I re-purpose the fittings, pump+res and 120mm rad to cool a GTX 690? 
Asking because I finally lucked-in(?) and found a GTX 690 at a reasonable price, but sadly it has a Waterblock(EK-FC690 GTX - Nickel) attached and my PC is not WC ready, well its never going to be, seller does not have the original heatsink anymore, and on ebay, I can only find one...for $200, includes a broken/fried 690.

Please no "why not just save and buy a current/next-gen card if you arent water-cooling", I cant because some people become poor for a few years after spending a boat load on a PC they should have never naively invested in, I would love to have the 690 if I can make due with this tiny pump and reservoir.
Gtx 690 will be replacing a dying 670.
PSU - Corsair AX850.