Like eezstreet said as long as there is a significant change to the ported content, this could be new textures, sounds etc, then it should be fine but then there is always still a risk -- just a diluted reduced risk than straight up posting ported content with no changes at all. It can be argued how much change a port should have to be accepted here, however I believe the rules need a second glance, take another look over it and make sure everything is appropriate.