Thanks Boba, and (I think) judging by your name I would say you are also a big Star Wars fan like myself.
I am thinking about 86ing the 6" woofers back there and putting in the Infinity 10" powered sub. I would love the put the 5.1 decoder in it and have full surrond, would take the 6" woofers out and put a nice packed back there for the surround effect. Difficult to determine where a should put a center speaker, but the guy that is doing mine for me has built many a show car so I have lots of confidence in him