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Message: <blockquote data-quote="dutch" data-source="post: 729755" data-attributes="member: 11020">So Im having to rebuild my diff because it's making weird noises and I want 3.73's.. Looking at $200 for a diff, $250 for gears and installkit, $700 for installation, probably $300 for a alu d/s too. Excluding the sh*tload in shipping because they're all heavy items.My next step would've been a catback because I'm running the stock catback..Then it dawned on me, now would be the perfect time to do an IRS swap! I've always wanted that because I daily my car, and it's much better for daily driving. Also comes with 3.55 gears which are perfect for my KB plans, would require a new driveshaft aswell I think? And would require a new catback, so might as well buy an IRS catback right away..Is this doable in a long weekend for a hobby-bob like myself? And what are the costs of a good condition IRS these days? Any other parts strictly required?</blockquote>