i'm gonna make a few guesses here since you decided not to provide full info.
1, this is a 4 cyl 2000
2, this is still a 6v setup
3, you are using a 6v round coil.
if all this is true.. unless you have a real odd coil.. it should not need a resistor.
how about throw us a bone and tell us WHAT COIL you have.