Seems like everyone i have is late model lol. I have tore down a few 318s all from the 80s that's where most of my parts have came from. Had I known there was a difference i probably would have used the earlier one im not a big fan of how easy that thing pressed in. Don't seem very tight to me. I may go back and clean the other one and paint it and use it instead. I think its the original one to this 360.