Comment on WordPress Header Images by SEO Dave.

WordPress Custom Header Options Under Stallion Theme >> Layout Options your could

Activate Stallion 2011 Header Area
2011 Simplified Title Link Area OFF

and

Hide Original Stallion Header Area

With the Stallion 2011 Header Area the large image is clickable. Upload an image you like and you’ll have a clickable header image.

Difference between the default header area is the size of the image.

David