There's a dearth of information here on swapping a Renix 4.0 out for a HO 4.0. There is nothing on swapping 2.5's. Or maybe I just couldn't find it. I have a '94XJ with a 2.5, AX15, I'm going to swap into a '87MJ, AX4, also a 2.5. I'm planning on setting the 2 engines side by side and trading anything that looks different between them. The XJ is 4WD and the MJ is 2WD which is why I'm not swapping trannys also. Surely this has been done B4. Anyone got any links or tips on this? TNX, Jim