P150HM parts compatible with P370EM

I'm planning on upgrading from my P150HM, so I have both better cooling, and a larger upgrade possiblity, as I don't wish to buy a new barebones in a while, yet I don't wish to spend much, so going from a Sandy Bridge chipset, to an Ivy Bridge is the most logical path.
I can get a P370EM barebones, with GPU heatsinks for $850US from the ebay seller "upgradeyoulaptop", although I have asked how much it'd be if they did not include the heatsink.

Anyway, the point in this thread is, the P370EM is Ivy Bridge, therefore it should be compatible with my i7 2760QM, and my AMD 6990 should also theoretically work?
Both the CPU and GPU heatsinks appear to look the same as the P370EM's standard, what I'd really like to know, is will they still be compatible?
I have seen both my P150HM's and a W880CU's motherboard, and the heatsinks also look similiar, which lead me to believe, that most clevo parts (assuming the CPU is compatible with the chipset, for the CPU, and that the GPU is MXM 3.0b), are interchangeable between models.

TLDR;
Can I use my Clevo P150HM's i7 2760QM, AMD 6990m, and the heatsinks for both, in a Clevo P370EM barebone?

My future plans, are to upgrade to a 7970m, then get another along with crossfire heatsink and cable, although I currently have no idea how the process of installing them like that works.

 

Cpu and heatsink for the gpu would fit but the gpu is a gen behind the motherboard so may have issues so it is not guaranteed.