Source is Mister Bishi (see his post 5.29 Supply Breakthrough !!!!!!!!). I bought mine a little over a month ago and I probably won't get them until early May.

I will be using an ARB RD110 locker in the front. You don't have to use the ARB locker if you wish to use an LSD, however, there's no point in doing the diff swap unless you plan on using the ARB in the future. You can use an LSD in your current front diff. The diff swap is only necessary if you intent to install the ARB.

I would suggest, though, that you decide what your long-term goal is and set a path to it. If you don't do the diff swap now, and get 5.29 diff gears for your 8" rear and 7.25" front, and decide to swap the diff later for putting in an ARB, you'll find you won't be able to use the same front set of 5.29 gears until you get a front set of 5.29's for an 8" diff. You also won't be able to use 4WD until getting 5.29's for the front (they have to match the rear diff ratio).

Clear as mud? Let's see if I can simplify it:

-To install the ARB you must swap to the 8" diff (must be from a '91 M/T V6).

-To swap the diff you must use V6 axles (the axles are not dependent on the gears or the locker...which axles are needed are only dependent upon which diff is used).

-To use 5.29 gears you have to decide what you want down the road. If you get a front 5.29 set now for your current 7.25" diff you cannot use that same front gearset in an 8" front diff. Of course, you could decide to buy a 7.25" front set now and an 8" front set later, but I doubt anyone would want to waste that kind of money, and those gears may once again become unobtainable.

I am going to wind up with an 8" rear diff (already has an ARB RD05 locker), an 8" front diff, an ARB RD110 locker in the front, an MB241981 5.29 gearset in the front diff, and an MB241981 5.29 gearset in the rear diff (note the part numbers are the same because both of my diffs will be 8".

Does this help? Let me know if you have more questions.