A few years ago I pulled my 5.9l to get rebuilt. I remember pulling 3 about 1-2 inch aluminum plugs from the block right above the oil pan. Well, now it is time to put the engine back in and I realize the rebuild kit never came with them. So I am not sure what to look them up under. Attached is a picture they are 3 holes that look like they could be dipstick holes but they are not. These are on the driver side.