What I ment was that you needed the complete EFI inlet with TPS, ACTS, and injector loom/rail, etc. then just the coil pack and CPS as Gary says above mate.
But... I would recommend selling the greys and buying some nice new Siemens Deka IV's, they are a modern injector with a much better spray pattern and are high impedance so no chance of noise issues, and to boot they are only about £150 brand new for 4!