[TR] Ballasted or un-ballasted coil in a 74 TR6

[robert rudolphi]

Hello Everyone,
 
I have a 74 TR6 and it does not want to idle when hot.
Before rebuilding the carbs I want to replace the coil (currently it has a 20
year old Lucas sport coil). I am thinking about trying the Pertronix Flame
Thrower coil, but am unsure if I need the ballasted or un-ballasted. 
 
Thank
you in advace for any assistance or suggections.
 
Robert Rudolphi 
74 TR6