That's the easy part the date is the key unknown...Then he can call ECS and get a dry transfer made or buy one from dixie restoration parts...Per '68 FSM- coil is Chrysler-Prestolite #2444242 or Chrys-Essex #2444241(same #'s for 440&Hemi)
3 months or less but he has to figure out what his cars actual build date was......that is the key unknown3-6 months(?) before build date?
Contact this guy...thanks guys, its a 68 road runner build date june 24 1968