Thanks, cyclone3d. I definitely wouldn't mind making one from scratch and sharing the build instructions/suggestions if it is successful. The key item, in my opinion, would be to design a PCB and post it on OSHPark or something so people could build them. The remaining components are nothing special. I saw someone else mention they were going to build their own in a thread here last year, but I don't know if anything came of it. If you could provide measurements for your board's dimensions and mounting points - that could be more crucial than the traces. I assume all these things just take +5V through an appropriate resistor, apply it to common anode displays, and use the jumper pins to allow the user to turn on the necessary segments (to GND) for each display. Plus a little extra due to turbo on/off.
That said, I got to scratching my chin a bit after I wrote the original post. I went to my garage and looked through some of the cases I have stashed there, and one case actually does have a triple seven segment display in it. So perhaps I will do a swap - provided I don't ruin the aesthetic of each.
I think each case has the appropriate space as both have the transparent, 5.25" wide plastic across the front of the case rather than just a small window in the plastic for the perfect-sized display. My concern is the mounting - just as badmojo also pointed out.
