I'm pretty sure they all go into the block on later model (definitely 87+) engines. Check your other post, someone gave you instructions on re-installing your tube.
goes in the block.....be careful removing the old one I just did one on a 98 ford truck and the lower part where it goes into the block broke off and went in the oil pan....I was about to take the pan off and go that way but I thought I would drain the oil and use my small extending magnet and fish it out....10 min doing that was alot better than droping the oil pan lol.