Alright, there are the three coils with the plug wires going into them. I was wondering would it be better to just replace all three of them when doing the tune-up. And also was wondering if anyone knows the part # for the msd type coils. Because I dont' know exactly which one it is. and if the msd coils are any good. Because I'm guessing they are the best when it comes to ignition parts. I've checked out the msd site, and can't figure out which one fits my car which is a 94 3.4L . Alright thanks for the info. peace