I have the Rockler DC box, which collects from the back through a 4 inch port, with a variable air intake on one side. There's a Y splitter with 4 and 2.5 inc on it, with the small port going to the dust intake on the fence. I'm thinking Stick's idea of running a 4 inch fresh air port up to the bottom of the Triton is a great idea. I'd have to remove the box and put in some half inch ply to contain any dust that falls through. The 4 inch DC port can remain in place through the ply at the back of the stand.
The more I do, the less I accomplish.