Alienware M17X R2 - Parts + Upgrades

[DylSki]

Hi, 

Purchased a sweet nebula red unit to go alongside my other red M15X 

I'm planning on swapping over the i7 940XM & GTX 970M (6GB) into this M17X R2, then eventually buy the same parts again to go back into the M15X.

BIOS:
Currently on version A6. Would i be able to update the bios without the battery? Using my genuine 240W dell charger.
I would like to use an unlocked bios as my intention with this machine is to do some cpu overclocking. I was heavily limited to just turbo boost multiplier adjustments on my M15X.

GPU:
Do these M17's accept newer mxm cards like this Dell 970M i have? 
Down the line if possible it would be cool to throw dual 980M's inside this thing. 

Display: 
Sadly this ones a 1440 x 900 panel. Can i simply install a new WUXGA LCD providing its the same pin layouts / matching specs of a standard WUXGA these shipped with new?

Battery:
As expected, the battery is not present. Where could i find a half decent aftermarket one to? 

Bottom cover rubber feet:
Some of rubbers have gone missing, Is there a decent alternative i could use?

Any help / info would be greatly appreciated. 
Thank you.