you can wait a month and order this an external t-bolt ssd.
http://www.engadget.com/2012/01/09/elgato-thunderbolt-ssd/
this one is also coming soon
http://www.theverge.com/2012/1/8/2693078/ocz-thunderbolt-external-hard-drive-lightfoot
Keep in mind that the BTO iMacs with SSD are specially made and have a bit more room.
I have heard of people having trouble with SSD installations because of this. It is possible, but just more difficult.
Whaaaa?!?! This is news to me and also the most farfetched thing I've heard on here since 7pm tonight.![]()
I bought a custom iMac, but had to do it over the phone. Use the number on the Apple site (top left of the screen unless the have moved it) It's better to talk to an expert when speccing up a Mac.