MP Electronig Ignition Converion '66 Dart

I am using the stock resistor, for 5 years now.
You can listen at the bottom. :)



http://www.youtube.com/watch?v=Ud8mci4rjFU

Okay, I tossed the stock one from the points system back in and it runs just fine. However; is the resistor supposed to get hot to the touch? As I understand the ballast resistor its purpose is to limit the voltage to the coil after ignition. I'm not sure how hot is too hot but I'm sure at some point something will fail if the ohms are out of whack.

Anyone know what the voltage should be running into the coil while the car is running? MSD apparently has a .8 ohm ballast designed to work with the blaser coil, I probably can't go wrong with that - and it appears to come with a bracket that should work on our firewall.

Can anyone say if this is a realiable option?

http://www.jegs.com/i/MSD-Ignition/121/8214/10002/-1?parentProductId=761219