I wouldn't guarantee that it would work correctly, there's several hacks going on that are reading/writing to specific memory addresses in the game, so if for some reason the rfactor exe is different, then it might not work.
Merry Christmas! So, I now have a new computer. I installed rFactor and HydroMod and tested it out. The clock still doesn't work. I made sure to have DX9 setup in the Config, and I even ran the game as an administrator. Still nothing.