Hey guys i am trying to finish a motor for a 93 silverado with a 350. When I got the truck the motor was in pieces. There is a sensor that goes on the drivers side in the head toward the front between the #1 and #3 cylinder. Which sensor goes here? Any help would be great, since I havebeen working on it on the weekends since november when I had time and I am ready to hear it run. Thanks again.