Have some questions on which tranny to swap in my 88 YJ. Currently I am running stock 258 I-6, TF999, NP231, 4.56 gears and 35s.
The TF999 is a three speed and I would like to have an overdrive gear. I found that the Dodge A-518 is supposed to be close to what I have now But with an overdrive. Does anyone know if this will bolt up or can anyone give me an idea on what tranny to look for? I do want to stay with an auto and do not want to get my first gear any higher than it already is.

Would like to hear comments and suggestions.
Thanks GFSmith