One of my Racing T.8 fits a carbon tank ...
 Usually, the tank is kept with a couple of rubbers.
 These rubbers are hanged on with a couple of alloy hooks on the frame above the carbon part between the steering column and  the tank !!! 
 I'm unsuccessfully looking for a couple of hooks   
 
  Can you help me to find these items , provide measurements or suggestions  ??? 
 Thanks 
 Philippe