You can take the fan off the TC spec and it will fit fine.
try to servo tape the fan next to the speedo if you don't want to completely remove it. There was someone that posted a pic, using a quick connector on the fan wires.
Agree with StadiumChris on you don't really the fan if running a 13.5 or 10.5
Think there are some pics posted of different brushless speedo on this thread....if a GTB can fit then a TC spec can.