GTX 970 / GTX 980M in M17x R2

Hi:hi2:
Here´s the question:

Is it possible or are the chances high that i can put one or two gtx 970/980m in my M17r2 in the future?

I read Gtx 970M has a tdp of 100 Watt while Gtx 980M´s Tdp is 122 Watt

So i think it could only be possible with GTX 970M.
Did anyone tryed this out already?

Thanks in advance

Shady