My first post!
I am using flesh hounds of Khorne for my salamanders, mounting them on the appropriate base. I've used the small circular dags from the Saurus warriors kit that are supposed to go at the bottom of the standards to cover the Khorne imagery. Depending on how you paint them, they don't need too much more conversion.
http://www.games-workshop.com/gws/catalog/productDetail.jsp?catId=cat440015a&prodId=prod1630139a&rootCatGameStyle=