First - the headunit will plug in fine, but it depends if you have sirius right now or not. the newer ones the sirius is built in the headunit; whereas the 08 its a seperate module in the trunk.
B - the mirrors should swap fine. generally newer cars have one harness made for them and it's just a matter of whether you have the actual option in the car. the heated mirrors work on the rear defrost button.
4 - switching seat covers is possible, but can be a real pain. would be easier to just get cloth seats and add a heater to them. however there is a reason they use leather instead of cloth for heated seats. leather is perforated to allow the heat to flow out of the seat for safety reasons.
and where did you learn to count at? lol. jk
2013 F150 4x4 SCrew XLT 5.0L
Midwest Crew #22
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