Yes and no. Not sure about lifts, but when tuning people will usually uninstall the tune if they need to take it to a dealer. If they can blame something being broken on the tune, then they won't warranty it. But if it's something unrelated, it's fine.
If you go to a different size rim and/or a different height tire the speedo will be off a little bit based on the size difference. I think these are the stock size except the tire is a little wider so I don't think it changes the speedo.
Well I don't want to upset any more people, but I but I just got scheduled for a build the week of November 8th. My order was confirmed by Ford September 1st.
2.0 lariat
4k tow, lux package, FX4 as well.