Chips aren't very helpful on the 2.7L. A good intake is probably the only upgrade I would recommend over stock.
For the mirrors, power mirrors can be installed, but Toyota rarely adds and of the wires to the harness if not equipped, so you'll need to wire them and the controls from scratch.
For the mirrors, power mirrors can be installed, but Toyota rarely adds and of the wires to the harness if not equipped, so you'll need to wire them and the controls from scratch.