How to have POST templates (just like PAGE templates)

I'm using Nelo, and am wondering if there's any way to be able to select a "template" for Posts just like I can for Pages. Specifically, all I want to do is have the option of having a standard post style -or- a style that has no sidebars at all. Ideally this setting could be specified on an individual post basis (just like it is for pages).

Any advice?