Husky Gearbox 2007 Double Cab Question

As I chug along on improvements, I plan on getting Husky x-act contour floor mats and have some questions on the Gearbox. 2007 double cab.

(1) Is there a significant "gap" between the back seat floor liners in the gear box? I.e., can you see a lot of exposed carpet

(2) My tundra has a metal attachment under the passenger side rear seat that holds the jack. How is that dealt with?

(3) Does it project beyond the metal seat supports (the overhang) to line up with the fronts of the seats or is it even with the metal seat supports?

For years, I have had a 1x4 velcroed to the seat supports that hold stuff under the seat from winding up in the floor area and it has worked fine......and if the gearbox does not have significantly more storage volume it may not be worth it.