GTX 980 SLI P870DM-G

Hey I was curious if it's possible to do an SLI setup with the desktop version of the GTX 980. The only options I see when building the laptop are the Desktop GTX 980 and GTX 980M SLI. Any input is appreciated. I do realize none of the resellers have that option but is it possible to do after purchase?

I think fitment and power would be the biggest issues if trying this but I am not certain about the space in the P870.

Sent from my iPhone using Tapatalk