HELP..Mopar Perfomance ECU No spark

freshayr said
so the msd 6a will just plug in to existing set up?

Well, not exactly a "plug in" but it's not any more complicated than the MP electronic conversion. I too switched over to a complete MSD system and I must say, my car idled much better.

http://www.moparts.com/Tech/Archive/elec/6.html