New Post: How to change form one kind of architecture -Html-Razor-Xslt- to another?

Let's assume I've set up a new sitet and I've chosen the "html" basic configuration for this.

What if I now I wish change the site architecture to "Razor", or "xslt".

• Is it possible? How?
• Does it implies some lost of data?
• Is there any implications of this, more than changing the behavior to editing the site?
• Is it possible to mix this kind of behaviors? (I mean using at the same time razor, xslt and html approaches?
  

Related to this.
When I build in Visual Studio the site and then I publish to the IIS, when I start the site with the explorer I'm not asked about the possibility to choose the razor-html-xslt configuration

• Is it normal?
  

Thanks in advance for the clarifications!!!
Raúl