My 340 in my 66 developed issues :-(

cudak888 said

Someone correct me if I'm wrong, but I believe you'll be fine using that MSD Blaster plug-and-play to the original system.

-Kurt

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Without the ballast your saying..? Then I'd get the consistent 12v - what I was reading in the article the ballast only gives 12v at startup then it drops the voltage to 9v...