Trying to find a different POST template

I have a theme from themekraft, X2 but have not received an answer from them on this. I am trying to figure out how I can have a different POST template. there are many PAGE templates--but as far as I see just one post template. (their demo is here:

Am I missing something or... how hard would it be to create this?

I really would like to have my post content be in the place of the left sidebar (which I currently have blank) and the middle with a right side bar of widgets. Right now, it only uses the middle space and the column is really small.

You can see one of my pages here: