sftp – Is there a way of adding an Amazon EC2 Instance onto Finder?

Hey is it possible to virtually mount an EC2 Instance in finder? I’m trying to eliminate the use of an external SFTP client (I use Terminus at the moment) and I was wondering if it was possible if I could just natively use finder instead.

Right now I’m running

ftps://root@(IPAddressOfEC2Instance)

Although it’s asking for a password, is there a way to specify a .pem file instead?