Cheyenne Lanae

So guys I'm having a hard time here. I have a civic with a stock b20b motor. Only problem is, my oil sending unit was snapped off and took a chunk of the block with it. Now I'm stuck with a car that cant hold oil and im starving the head of oil. Any idea on how to fix it ? Ive got the stuff to put a new block on but not trying to go through the work of pulling the motor out once again.