Kind of hard to say without knowing how your console is built or seeing pictures, but you'll want your mounts to be hidden once the carpet is in, right? I would think that mounting upright tabs on the tunnel & hump with tapped holes would let you bolt in from the lower edge of the console sides, nothing showing but a small bolt/screw head. Lots easier if you're not having to get to the inside for washers & nuts unless the top of the console comes off for easy access. If the top is removable I'd put nut-serts in the floor, tabs on the bottom of the console and all you'll need to account for padding & carpet is maybe a longer bolt, assuming you carpet under the console edge. I'd do it now rather than fabricating on new carpeting.