Beatdown is totally right, I have an '83 and before I knew who to ask I put in two of those integral bellhousing turds, but then something awesome happened. I saw this featured truck in Petersens 4wor that had a marlincrawler setup, so I called contact number at the end of the article, not really knowing what to expect, but I asked anyway and the guy I was talking to took my number and said he'd call me back. 10pm saturday night my phone rings, Marlin calls, answers every noob question I could think of, then explains where to find a w56, how to move my Xmember, & how to do the whole swap with without making a dime off of me. That was years ago, but if I buy a toy part from some one else, it's because Marlin doesn't sell one. 1-559-252-7295 Chunk the L series & get a W56 all the cool kids are doing it