I'd say more like $7k to do it right...
boost gauge, boost controller, turbo, intercooler and piping, exh mani, down pipe, orp/high flow cat, catback exh, wideband 02 sensor and gauge, J&S knock sensor and gauge, oil pressure gauge since you're going to be tapping the oil pan, Clutch and flywheel, gauge pod and everything for the wiring and tubing to the pod and loom to protect it and keep it from loking like arse, wrap for the downpipe and orp, and then a dyno tune which may include an xcal2/3 or predator...