Leaderboard

The regulators have a different form factor so the door skin might require modification. Since you have both frames, why not just swap the window glass? Use the good glass in the frame that works with your regulator...

Not to argue with my good friend Cliff @siteunseen but it seems unlikely that Nissan would have installed a 3/4" high plastic grease reservoir in the same location as the rubber bushing mount. If so, there would have been an existing hole for the threaded throat of the fitting. The carparts manual diagram referenced by @Zed Head shows it to be on the passenger side for all models of S30. Note on my pic there is actually a reinforcing plate on the tube to provide enough metal for threads. I've no theory or explanation as to why our OP has no provision for the part other than some possibility that the rack might not be original to the car.

Was it running correctly when it got "bumped"? How hard was the bump? Where is the module mounted? Check the grounding to the mounting grommets. If it was a hard bump it might be that the air gap in the distributor got moved. Probably worthwhile to go through the basic distributor maintenance described in the FSM. It might not be the module, it might be the distributor itself. Maybe even something simple like the distributor cap got knocked loose.

Anything connected to the "Guild" MUST be taken with a large grain of salt!

Capricorn One (1977)