I am wanting a little bit more out of my J10, I really hate my 258 with that piece of shit carb on it. I am going to put in a 4.0 it. I just need a web page that states all of the parts needed for the up graded. I am also planning on putting in a AX-15 5 speed or a nv4500 which one should i put in i have a driverside np208 transpher case which i am willing to change out.

Here's a guy putting one in an 83 Scrambler, he's compiled a bunch of the articles needed along with a complete list of what parts he's had to buy, etc. http://www.wilhelm-tech.com/jeep/mods/40EngineSwap.htm