I've noticed that the original output hole on the unit could fit 2 or 3 hoses of that size stuffed down in thier. So one could do that and seal up the surrounding emptyspace to achieve the "normal" output, minus the girth of the hoses and the amount of emptyspace that was sealed. I guess I'm being anal and wondering about the relation of the size of the original hole and the sum of the sizes for the hoses combined. I guess I'll just measure the fucker and see. It's been a while since geometry...
I don't know if my original exhaust hole is bigger than yours because my unit is bigger than yours but my guess is that they are the same size...the holes that is. I wonder how much more complicated I can make this...