Balast resistor or no?

If it helps at all this is the ignition system I have.. However it came on the car and the guy I got it from did say he ran this edlebrock coil and ran it through the balast resistor that was in his truck originally and it worked fine. So I'm really not sure what direction to go from here lol. Should I just get a stock coil and balast? What's the best route?