I just finished with the 1-1 1/8 expansion plug from Pep Boys. Pull the box out of the grommet, then the hose, and ta-da! Easy access to the bottom clamp( which those bastards at FoMoCo glued in place). Pull the hose, install the plug, refit the hose, redo the clamp, attached the box - 15 minutes. Waiting until a bit later for a test ride, because I am going to reset the ECU with a neg battery wire disconnect.