Is it possible to create a monster fusion drive on a new 5k iMac? i purchased a 1tb Apple SSD for my 2010 Mac Pro. I also have a 6tb WD drive. I'm wondering if I could get a base model 5k 27" iMac and upgrade the hard drives? Then throw in some RAM. Would love to use the parts I have. But can you have a 7TB fusion drive? Or will Apple limit you? Also, will I only be able to do this with an iMac that was setup with Fusion? Or could I get the base 1tb hard drive model?