They should be a direct bolt on for the seats. For the controls you will need a piece of harness and maybe a couple of other parts. Your best source on this is boostedgreygoose. He started his own company making harnesses for upgrade swaps. He has built an XLT to way higher trim levels. Since you are starting with a Lariat you should have an easier time. Activate the options with forscan and you will be good to go.