I've got a 6870 around here somewhere, unfortunately no stock cooler for it since I threw it away when I did "the mod" (put an aio on it) so you'd need an aftermarket/universal cooler for it. Doubt you'd want it since that's not ideal for several reasons, but figured I'd offer.
MSI GeForce GTX 1070 Sea Hawk EK X
Custom Liquid Cooling
Phanteks “Enthoo Pro Series"
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