1994 Pontiac Firebird how to install crankshaft position SE

I'm really not sure. I drove my car to get a state safety inspection, it was running fine but the check engine light was on. When I went back to pick it up, it wouldn't hardly start and when it did start it wouldn't stay cranked. So they checked the car and said the check engine light came back with a code 44, 64 and 82. They said I need to replace the Intake Manifold Gasket, Replace the Ignition Control Module, Replace the Crankshaft position Sensor, and replace the Fuel Filter for a total of $850, which I don't have. As I said the car was running OK when I took it there, when I went back to pick it up, it barely started. I had to push it home.

On the repair estimate it says Front Crankshaft position Sensor.