i would go ported. audiobahns were made for ported enclosures and the sealed is not recommended by audiobahn. ive heard that audiobahns sound better in ported boxes than they do in sealed. i have two aw1206Ts in a ported box built to the space saver design by audiobahn and it sounds ok. good enough for audiobahns i guess......
i agree with nemen about audiobahns sounding like crap. but since you already have them, ported would be better for those. jes is right about audiobahns recomending ported.