Yes, you can customize your results' look and feel through the .xsl files for customization, or you can use the JSON/XML search results. Log in to the SearchBlox admin console, and go to the Results tab. You can also edit the jQuery-based faceted search page in the plugin folder (/searchblox/plugin).
You can use the default template or create a new .xsl template. The .xsl file is saved under the /searchblox/stylesheets folder.
An example of customized results is shown below: