WebSphere 6.0 JSF implementation change for MyFaces

[Pavel Vybiral]

Is there an official way how to change JSF implementation (IBM) in Websphere 6.0.0.0 for MyFaces one. I know that WS6 comes with its own implementation but I would like to disable loading of JSF classes from the shipped jar file (jsf-api.jar and ws-jsf.jar) to avoid class path clash and use MyFaces implementation instead.  Thanks.