I could get a picture of mine tomorrow...
The plunger isn't going to be shredded if it isn't used, correct? I'd keep it there for emergencies. It saved me on one runaway a while ago... The 2x4 evidently wasn't a perfectly flat 2x4, and with the manual lever pulled taut and the 2x4 over the turbo the engine was only dropping to a really angry 600 degrees.
The point being that the solenoid has a few panic/ emergency shut-downs in it before it shreds. I'd consider it worth keeping if somebody else ever needs to turn down the engine in an emergency.