I sold my GTR injectors and bought 550's instead, all up cost me another $200 but dont have to worry about any wiring, they are brand new with warranty.
Sounds like your car is coming along pretty well Damo, much left to go before its running???
UPDATE FOR ME: gauges arrived the other week (started to remove old ones) manifold is back on (didn't end up heat wrapping it though) replaced my harmonic balancer as it had a small crack in the lip, started prepping my rotor/hubs for a quick flick of paint and continued tidying the birds nest in the center console.