You would be suprised. Got a 3A Racing pod on mine. Give it some stick and it sounds great
Finster, I would be more concerned with the exhaust mod you have than the pod filter. Id say that would be the first thing cops would be looking for on a P plater car. Like Al said, you might aswell chuck a pod in it now. Just keep it nice and neat and when you get off your p's, sell it and buy a gtst. Or, if it has too much sentimental value, decide to respray it, become too attached to it and don't want to sell it anymore (like I have), do a conversion (like I am)