I have 1 TB solid state drive and I need more space if you can believe it. Hate working with externals. Is there a 2TB SSD even available for the mac that I could replace on my late 2013 15" MBP retina?

Kratsgfixit-

Could you format the new drive before taking out the old one and replacing it? I'd rather know I had it formatted correctly, etc....before taking the old one out and putting a new SSD in. Could I just put the new SSD into one of those eSata drive holders (sorry can't remember official name) that connects via USB and do it using the instructions you provided in your post?