Update: Replaced the mounts, (old mounts were fine surprisingly) and checked every subframe and trans bolts as well as all the plugs and packs. Re-torqued everything to spec. The car isn't throwing a CEL and when I read live data and search for codes the values are all normal when driving and at idle. No misfires or rough idle but I still have the vibration that is RPM specific. Worse when driving over 2000rpm or so but it does the same at idle. I can feel most of it in my seat/center of the car and there's a faint noise as if something is off balance and slightly thumping something else. Driveshaft? Carrier Bearing?
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