Swapping the GTX 770 Heatsink, Possible?

[Nitro192]

Hey guys, I recently picked up a GTX 770 Windforce and realized i'm not the biggest fan of the heatsink. Here's a picture of it in my rig,

And yes the back case fan has stopped spinning, I need to swap it out.

But what I'm really curious about is if I can put the stock heat sink back on the 770, This one here.

Is this possible? Where can I buy a factory heat sink? And seeing as the card comes overclocked, How badly would it effect my temps?

 

[Gam3r01]

The reference cooler may not mount correctly based on the PCB layout of the windforce card, however, even if it did work the reference cooler would increase temps by a measurable amount.
Is there any reason why you dont like the windforce cooler?