First off, wanted to say thanks to everyone here, this is a great forum that I'm only now starting to frequent more often. LOTS of great stuff here!
But back on topic... I was very quickly running out of space for my tools (I've only had my own garage now for a couple years so I'm acquiring tools every time I tackle a new project) and was inspired by Ford Guy's "doubling" up of the 4 drawer tool cart. It ended up being a little more work than I'd expected but that's typical, seems every project takes longer than I think it will.
The new drawer unit I purchased had a damaged bearing track so I had to return it for a new one, but HF was happy to oblige. Finally got the upper drawer unit mounted up Tuesday after work. I did one thing different as well, and that was to cut the center "blank panel" where the lower lock mechanism would be. I figured this was completely wasted space and if I opened it up a little I could put some small items there, maybe a notepad, mechanix gloves... something like that. It's not very usable space, but I figured it was better than nothing. I could have opened it up more but cutting lower or not keeping that "gusset" on the sides would have weakened the support for the top two drawers. I would have preferred to have a smaller radius on the gusset but this was gonna be a little tricky with the 3" cut off wheel. The cutting I did do did weaken it a little, but nothing I'm worried about yet, and it's only those two smaller drawers anyway so worst case scenario I just don't put heavy stuff in those two drawers.
Nice job! It is kind of nerve racking cutting up a brand new cart.

I also looked at the empty space and thought about cutting it out like you did... I decided to take apart an old power strip & lay out the outlets, switch & breaker...
Don't feel bad about it taking longer than expected, I still haven't finished.
PM me if you want any detailed pics of my mods.
Bob