Swapping everything over to the new intake gave us the opportunity to clean up the high-mileage parts. The injectors just slide in with a dab of oil on their O-rings, and the fuel rail presses down easily over them. Be careful not to over tighten the fuel rail attachment bolts, as the small bolts will break rather easily. Don't ask how we know. You'll also have to swap over the air charge temperature sensor at the front of the intake.