For an offseason CAD exercise, I designed a sheet metal drivebase using Vex's Drive in a Day Chassis with some slight modifications.
As you can see, I used the WCP SS gearbox with this frame and after some slight modifications I was able to get them to mate at least theoretically. Here is a screencap showing the hole that would need to be made in order for the SS gearbox screws to be able to attach to the frame:
I do have one question for the CD community. Is the two screws bolting the gearbox to the inner rail, plus the fact that the axle would be supported on the other side adequate support say if this was to be used in competition? Any insight provided would be helpful.
Also, per R13, here is where the source files (CAD, BOM, and some pictures) are:
https://drive.google.com/folderview?id=0B3OjaSm8md4ES19lTlc3WlhxNms&usp=sha ring