An idiot killed my baby. Need advice.

Hate to read about this. Grab a fresh shell and start over would be my suggestion along with others here. Fixing it is going to take a bunch more time.

The one Pishta posted might be a good start if solid. Sounds like it has an extra pedal in it too... You sound like a 4 speed was the plan anyways. Use that stuff or sell it to reduce the cost of that shell.