Hi all, newbie here, I just bought a 2001 GT a couple weeks ago and after taking it home and driving it around some it was very clear it had a couple bad coils (no CEL but a noticeable skip/misfire under heavier load). I brought it to a shop and they identified which ones were bad and swapped them out with generic aftermarket ones. While the problem has definitely improved a lot it is still a little noticeable so I think I'd like to just replace them all myself and not have to worry about them. The big question for me is do I stick with Motorcraft (I had Motorcraft SP493 plugs installed) or go the performance route (MSD, Summit, Accell, etc...) Any advice is greatly appreciated and thanks in advance