Tacoma tool box consideration

My Regular Cab 09 Tacoma needs a tool box of some type. I'm a bit unsure of what I want to use so thought I'd list my requirements and see what you guys think or suggest.

1) Need as much space as possible
2) Needs to be quickly removable to utilize the front notches in box sides for a 2x cross member to haul plywood occasionally
3) If I go to chest type, it needs to be elevated couple inches off floor to slide 2x's underneath
4) Preferably aluminum for lite easy removal

I guess if I had to design one it would be a Aluminum chest style which runs from one inside edge of box to other, flush with top edge of bed to still allow a Toneau to cover and have 2-3 inch space under box to slide 2x's under. Throw in a quick release fastener system which attaches box to factory rail system and I'd be pretty happy.

Any ideas?

Thanks, Motoretro

 

Hey what I did on my last truck..after installing a cross bed tool box....made/cut down a saw horse{steel one} to match the height of my tool box, I would set it on the tail gate {two legs on/in the bed }..then I would haul the sheet goods on the top of the tool box and saw horse and could store all my tools below. Worked pretty good!