Hey guys, First of all let me give you some background. I'm in South Africa, and I own a 2002 KJ (Cherokee, as it's called here) 2.5CRD manual. I've bought a 2005 2.8CRD manual that rolled, and will be doing an engine swap very soon. After this operation, I'll be looking at the possibility of a SFA swap. IMPORTANT Note: Here we are not as fortunate as you guys in the US when it comes to axles availability. Very few F100s, no F150s, a few F250s but the D60 are hellishly expensive, and the few D44s out of a Rubicon are sold for as much as their weight in gold in the blink of an eye. So yeah, options are rather LIMITED! Second note: The intended use for me would NOT be hardcore 4x4 or rock crawling or stuff like that. The main purpose is to increase the ground clearance that is very limited with the IFS. Run 32" tires, maybe 33" further down the line, but I'm set on 235/85 R16 as a starting point. And then take it for mellow to a bit more involved wheeling, but nothing extreme. This is my daily drive (although I don't drive daily :emotions34: ) and I don't intend on damaging it. That leaves us (me) with the following options, considering availability, compatibility and costs as well: - XJ Cherokee D30 with open diff - WJ Grand Cherokee D30 with Vari-Lok diff (Quadra-Drive transmission) I would prefer the WJ D30 for the Vari-Lok. Also remember that buying a locker will cost an arm and a leg to import here. The problem I now have is gearing. The local WJs came in either 3.73 (petrol) or 3.55 (diesel). 3.55 is too low, 3.73 is pretty much spot on for 32" tires. BUT my KJ came with 4.1s, and the second one I bought has 3.55s. The first option I had considered was swapping both axles from a WJ, the rear being a D44a (aluminium casing) but after doing some reading, it seems that the stock AMC 8.25 is at least as good, if not better. This led me to look at a front axle swap only, but now I have to get around the gearing issue. After this long introduction, my question is: are the ring/pinions interchangeable between the IFS D30 and the SFA D30 found in the WJ? If I trust the Crown Automotive part numbers, not so: 52419.0040 for a 3.73 for a WJ D30 SFA (ratios available: 3.55, 3.73, 3.91) 52419.0042 for a 3.73 for a KJ D30 IFS (ratios available: 3.55, 3.73, 4.1) Do you guys have any idea on this? Should I rather look at the XJ front axle, as you can find 4.1 gears for it? (edit) The PCD on the XJ is the same as the KJ, whilst the WJ's is different. So it's going towards the XJ then...(/edit) Any opinion welcome. Thanks guys! Fab.