I have an 88 YJ with a 258, BA/10, NP231 combo in it. The 258 is built up pretty good and I am happy with it, the NP231 is short shafted and has an almost new chain in it so I want to keep both of these components, what I want to do is swap a Ford T-18 into it. I have 4.09 gears in Waggy Dana 44 axles running 33s, I would still be able to run 60 comfortably without OD, and that is fine because it isnt a daily driver and I will have a trailer for it soon. Does anyone know what would be involved in this, I think I can use a CJ T-18 bell housing and clutch fork. I can build my own hydraulic clutch setup, but how do I mate it to the NP231 without spending $$$$ for an Advanced Adapters part. I know that there are other swaps that would be easier, I have a AX-15 sitting at home in my shed that I was going to swap in but the t-18s 6.34 first gear brings a huge smile to my face. Thanks for reading this long post.