hey guys i have a 1966 mustang with a 351w. the car is running rough and i posted earlier about the problem. we thought it was a vaccume problem, and when we plugged the power brake line from the intake the car ran much better. but yesterday the car started acting up again where the idle was all over the place, the engine would die and kick back or run backwards. i have videos that i will post.(as soon as i figure ut how to post them) we now believe that we have an ignition problem, but we are unsure where to look. any help would be much appreciated!