I don't think this is easy to manage. [JBoss 4] How to change port 8080 in JBoss? @Digizol gives you some hints on how to change the 8080 port.
But I don't think this will be enough. You might be able to change all your ports to a unique address (eg in conf/jboss-service.xml, or in jbossweb-tomcat55.sar/server.xml).
But the next conflict might come up when you try to connect to the same database. Such issues are usually addressed by cluster or domain controllers.