Well after reading the several threads and looking at all the options for underseat storage I wasn't sure what to do.
The owner built ones actually looked like the best way to go.
I have the under floor boxes and the heavy RAM floor mat, any thing that restricted the ease of accessing the boxes wasn't going to work well for me.
I contacted Du-Ha and asked them about using the quad cab ones in a crewcab and they responded that they wouldn't fit.
After looking at all the various options I ended up ordering the quad cab ones even though I have the crew cab, the quad cab ones are 3" less in the front to rear dimension unfortunately the seat mounting differences made the total width not fit. I decided the heck with I've got this one I'll make it fit, I had considered getting the crewcab unit and sectioning about 3" out of it to keep it off the floor mat may have been a neater solution. A few minutes with a sawsall and the quadcab unit will fit a crewcab. May not be the nicest solution but now I have under seat storage that doesn't interfere with lifting the floormat to get into the in floor bins.
Corners don't fit well
Also the section were to 40/60 seaat slides go
After all the cutting
set in
Secured and done
May not be the nicest but it fits now and doesn't overlap the floormat and will work for now.
I am surprised that of all the manufactures that no one has come up with one that fits nicely and doesn't sit on the rubber floor mat.