Another shot of the two fuel filters, this time the Baldwin filter is on the right, Racor/Motorcraft version on the left - the RACOR version is the one to use. This wound up NOT contributing to my stutter/stammering issue under acceleration - it wound up being a few sticky injectors - if you experience this, FIRST thing you should do is consider how long it's been since you changed your fuel filter, then consider changing your oil to a SYNTHETIC, if not already, consider a 5W-40 grade if in a colder climate (I used 15W-40 Mobil1 Delvac Synthetic) and use the FULL BOTTLE of Hott Shots Secret...yes, HSS, FULL BOTTLE (2qts) this helped my stumbling/stammering issues DRAMATICALLY, but not 100% just yet (about 600mi. on the HSS/Synthetic oil change).