your standard injectors are fine, theyr more than capable for a few etc brake, you just need to tweek the fuelling and increase the amount of air intake to the engine. if your wantin it quicker, look for a lightweight flywheel and lightweight pulleys, thatll improve the quickness as well as the usual rolla mani and 4-2-1 exhaust mani upgrades. also strip interior if its not already done and look in2 lightweight alloys and seats 2. anywhere you can save weight, do it.