Blaster 2 coil with Orange box

G.Ballast Resistors - Electronic Distributor 1P5206436 1P2444641 Ballast Resistor, For Electronic Ignition Systems, Using P4120505 Orange Box and Production Coil, or With P4120889 Coil, 1 OHM

Page 10 [ame]http://www.mopar.com/assets/pdf/performance/catalog/Ignition_&_Electronics.pdf[/ame]

Mopar recommends 1 ohm. With their coils, maybe anything lower will cause too big of a current draw for the ecu.