This is our modified VexPro Drive in a Day. In order to get around the totes and the RCs for our lift, we ended up expanding 5.5" even though the picture only shows it at 4.5". They are then locked in place with bolts and wing nuts before the match starts. The 1/8" plates were cut thanks to the help of Anupam of FRC 1648 at the Georgia Tech Invention Studio.
Oh, and two CIMs per side with 11:72 gear ratio. A little quick for this years game, but it does the trick.