JRB: Your pics are loaded with great info, but I still have a ton of questions for you. How has your custom unit been working out? Do the Sortainers play well with T-Locs in daily usage? I see the labels on the older parts, but what are you carrying in there? What are the interior dimensions of the large drawers?
I've been lugging my Makita drills in a T-Loc SYS-4 with a stack of T-Loc minis filling up the other half of it. I have been picking up some installation slack over the last week with that setup, and I found myself needing just my impact driver and some bits without opening up the whole kit. I kept thinking of this Frankentainer as a better approach. I don't see myself making the mega version like yours, but the five-drawer Tanos unit looks good.
Again, I appreciate the great pics you posted, but any other info you can give me would be a big help.