i have a question....i own alienware m18xr1... 

intel i7-2670QM

8GB ram

nvidia gtx 560M

I want to do "major" upgrade...like increase RAM and maybe put one of the newest GPUs maybe a gtx980m if i can...is it possible?...and how much RAM can i max get?...

I know my english is bad but i hope u understood the question...thanks in advance