It certainy won't take a week! Boost as above, afr assuming its just a narrowband will just have a positive and negative wire and one which takes the afr reading the ecu see's, so you just need to splice this into the correct wire to the ecu. For the water temp gauge you'll need an adaptor which goes in the top radiator hose for the sensor to screw into, then its just the other power wires again. Also with the pillar pod, I'd get some strong mounting tape, I've got "foam mounting tape" from B&Q as the pillar doesn't have the same clips as the standard one so needs stuck down at the top.