I re-read your question several times, but couldn't figure out what you're trying to ask.
Are you curious WHY someone would replace the Rubicon e-locker at all? Or are you asking how hard it would be to replace?
Well, first off I re-read my own question and no, I did not properly ask the question at all…
http://wayalife.com/showthread.php?19050-RCV-axle-shafts-or-chromoly-for-PR44 In this thread, Dynatrac explains the difference between the Rubicon PR44 and the regular PR44
“Rubicon 44F housings are unique in 2-ways. The center pin of the Tru-Loc diff is offset to one side, and the Carrier bearings are slightly different size than earlier model 44’s. The RD157 is the only diff I know of that fits the Factory Rubicon Housing (carrier bearings) and has the 35-spline feature. We offer 2 variations of ProRock 44’s. One for Tru-loc factory Rubicon diffs, and one for conventional 44 (everything else) diffs. Think and plan ahead, they are not interchangeable later. The Tru-loc is a great device, but not the most durable. If you’re building a JK with 37’s or larger tires, consider switching to the ProRock, a new aftermarket diff, and shafts to match at the same time. Yes, that is more expensive. If you are a more mild trail guy, and on 37’s or smaller tires, the Tru-Loc in your Rubicon should last the life of your vehicle. Side note. A replacement Tru-Loc diff for your front Rubicon 44F at the dealer will set you back $1,920.00 MSRP. WOW!!”
Since I have a Rubicon and I would like to get a PR44 I was wondering if there is a better alternative to spending the $1,920.00 for a new locker should one fail. I don’t have exact prices, but I remember most e-lockers being around $1000. So to close (and hopefully properly ask) could you replace a stock Rubicon locker with a different and less expensive e-locker, but still wire it to the stock switch and on board computer?