My new project

If you can’t keep the non running car at your apartment can you get it towed to a friend’s place or maybe an inside storage location where you can do some work on the vehicle?
I also agree that prior to pulling the engine, diagnose why the motor won’t run.
Something as simple as old gas could explain the poor running performance. And a plugged fuel filter can explain why it won’t run.
Not doubting your fiancée, but I can’t explain sparks out of the exhaust,,,
That is a long way, there is a muffler,,,
Maybe sparks from under the car. A shorted battery cable?
But you should look at the vehicle and give a better description of what is going on.
Great looking car. So post back.