Chances are better than you would think. If you want to call Sound Anchor their number is 321-724-1237 Florida time. I believe you would talk to Robert in regards to model # SDA 804N for the Nautilus 804. I highly recommend the stands, they raised the speakers 3 1/2" off the carpet and really improved the bass. Would think the same effect for the 803's could be expected; you see a lot of the old 801's with Sound Anchors! Just my opinion, Charlie
