Rather than the compare and merge, I think it would be easier to identify the individual graphics and features of your mod and how they are replicated in his.
Both mods do the same thing basically. You've got dials in X location, he's got dials in Y location. It should be possible to simply change the files for his graphics to point to yours. The trick would be with positioning, which is cake and functionality, which via scripting should also be cake.
TDW has finally managed to integrate the various TDC modes into his mod, and that's just the first step towards integrating basically anything into the mod I'm sure.
