Changing ring and pinion gears into an existing housing is better left to a professional that already has the knowledge, special tools and required extra parts. The last estimate I got was around $300. You would likely need a press to remove and install the bearings (and new bearings), a dial indicator, torque wrench (or two), new crush sleeve and seal, locktite, the proper size taps & dies to clean the old locktite from the bolt threads, all the proper size sockets and wrenches and an assortment of pinion, carrier and side gear shims to obtain the proper shim thicknesses to set the backlash. Don't forget a detailed step by step manual to show you how. How much will it cost to buy, rent, or borrow what you don't have? How important is it that you get the repair done promptly and correctly the first time? Do you feel confident that this is within your abilities? I asked myself these same questions and decided I am not yet ready, and I have most of the tools. On the other hand I can swap a third member in two hours including bleeding the brakes & it's good as new- or at least as good as the new parts. So I'm with ctmandu. Have you checked car-parts.com for rears near you? Try Isuzu pickups about '84 vintage. They may list the entire axle assembly but will likely sell only the third member if you ask.
_________________ '78 Chevy LUV,1.9,4sp,headers,31's,SAS Dana 30,Dana 20,SOA rear w/Aussie Locker, rough body, bought new 12/4/78. '87 Trooper,2.3,5sp,headers,31's,ball joint flip & spacer,Aussie Locker rear,Superwinch hubs,brush guard w/5.5K winch,more to come.
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