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I am currently in the process of fitting a ford 8.8 with the necessary brackets to fit under the rear of my 01 Jeep TJ. In the interest of keeping cost down, I have decided to simply regear my front dana 30 to match. But before I run out and buy parts, I have a few questions. 1st, is that my rear 8.8 is a 4:10 ratio, and most sets I see for the 30 are 4:10 as well. I have been told that I have to offset my front to a 4:11 for some reason, but no one can explain why. all I've heard so far is that a 1% offset in ratio is "ok". is a matched ratio ok as well? if not, what do I do about this? 2nd, I believe that my current gearing in the D30 is 3:07. it is my understanding that I will have to swap to a different carrier to accommodate the 4:10 gearing. I have found carriers for roughly $100, but they are bare. What do I need in addition to the carrier and R&P in order to install into my housing?