I just did the BSD on my d23 and wanted to swap to a d20 oil pan because it has the oil return line already tapped into it for my turbo I tried to put the d20 pan on last night and no matter what I did it wouldn't go on. I searched around on the forums and some people have said that the oil pumps and oil pick up tubes between the two are different so the d20 pan won't work on a d23. Can anyone confirm this? The previous owner of the turbo set up was using this pan on a d23 but I still can't figure out how. Is there a certain way for the pan to go on?