that is a very nice cab sir. I am about to attempt to convert an old wardrobe. It has a few different compartments but the one I'm using is nearly 5 feet tall, 2.5 feet wide, and 2.5 feet long. So a little different dimensions than yours but the work I have ahead of me is essentially what you have done to your dressor. My dressor is conveniently missing the back to it (you open the front doors and you can see right through the back). I say conveniently because I don't have a drill bit and wouldn't be able to cut holes in the wood... so what I can do is cover the back with a thinner material.. I'm thinking masonite might be perfect... you cut through it with a pocket knife, correct? I could cut passive intake holes, a hole for my exhaust fan, and little holes to run cords through, all into the back of the dressor, if it is masonite and not thick wood. did you install electrical sockets on the inside of your cab for stealth reasons?