Was the Exhaust Manifold, Front Pipe supposed to sway during Catalytic Converter Install?

I just looked up Crankshaft Sensor. The last year it seems I've had every symptom of a bad crankshaft position sensor:

Misfire Cylinders 5 & 2
Hard Starting (just now after RPM gauge not working)
Stalls
Rough Idle
Poor MPG

The Airbox is fubar, so I ordered a new one and also crankshaft and camshaft sensors. I'm going to install all that, see how that affects the vehicle, then if necessary, take the manifold and valve covers down to inspect everything. I'll let you know with the video.