12 bolt lockers are now available

[Jolly Roger VX'er]

That's good to hear, how long did the install take? Does it make the rear end get sideways easier?
I'm guessing as I haven't checked out he link, but their Isuzu application may only cover the models that came with Dana rear ends.
Thanks for the info.

The instructions were very good...most of the work is putting all the locker pieces together in your hands...inserting tiny springs...lubing the specified surfaces with assembly grease...removing the Limited slip unit was easy...the only snag I hit was when doing the actual swap there didn't at first appear to be enough clearance to install it...made me think it wasn't the right part# but it finally slipped into place. Tight fit. like 2-3 hours of being overly cautious to install..probably could do it again in like under 2 hrs.

It reacts differently on different surfaces. The best I can describe it is if you give it the right amount of gas on a slippery surface (snow) it reminds me of a NHRA dragster "shaking the tires" in that they oscillate rapidly as if "hunting" for traction and it rapidly subsides as you begin moving forward. If you "hot-dog" (i.e. too much gas) you will go sideways like a crab but, it is pretty forgiving...I did this for like 50 yrds showing off...lol. The closest I'll probably come to "drifting".

If you stop at an intersection and make a right or left turn with normal throttle you won't even know it is there...but, if you are aggressive on the throttle when turning you will bark the inside rear tire as it is trying to drive both tires equally under heavy throttle. The instructions say to ease off the throttle when turning on slippery conditions as heavy throttle will cause the front to understeer (plow, push) but, I haven't experienced this yet.

Personally, I like your idea of using a "lunch box" setup for only the rear axle and using an "air locker" for the front. I woudn't use it in both axles.