listener port question in ODA application manager?

when you do a regular OUI install for Grid infrastructure in 11g, it asks you to choose the listener port. this comes handy because customers dont have to go change the listener port after the GI Install.Many customer like to run listener on non standard port like 1521..its more like a security recommendation in companies.
Can the ODA app manager add this listener port selection to its set of questions it ask in the GUI installer..
until this is done , is there a way to go edit the standalone installer created config file and edit the listener port from 1521 to some other port number..