It is not possible to configure custom ports for socket bindings through installer, installation fails every time when attempted to do so.
The cause is most probably change in jgroups socket bindings. Starting with DR12 these two bindigs were removed from all configurations:

<socket-binding name="jgroups-tcp-fd" interface="private" port="57600"/>
<socket-binding name="jgroups-udp-fd" interface="private" port="54200"/>

First we need to ensure whether simply removing these fields from installer is sufficient or we need more modifications.
Reference info in https://issues.jboss.org/browse/JBEAP-8982