Don't allow an already expensive repair turn into something even more expensive. Plug off the High Pressure fuel rail from any foreign debris from entering the very sensistive fuel system.  With this kit you won't have to mess with last minute make shift arrangements to seal off the fuel system. Just put the plugs in and continue with your work. No wipes, rags, paper towels that can fall out or tape that will either come off or leave a sticky residue.  You and the captain will have confidence on start up that the fuel system was sealed.