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Message: <blockquote data-quote="Warhorse Racing" data-source="post: 1503258" data-attributes="member: 23098">I hope that the input is helping. And I appreciate you sharing your videos. The car looks great out on course!Because the V6 doesn't have a lot of low-end torque, rear gears are an important upgrade. The decision between 3.55 and 3.73 rear gears should be made on a case-by-case basis depending on the length/speeds of your local courses. 3.55 is generally a safe choice, given the factory redline for the V6. I recently looked into having a 7.5" rear end rebuilt with a new limited-slip diff and rear gears, and it ended up being about the same cost as finding an 8.8" rear end and having the diff rebuilt and 3.55 rear gears installed. If you check out MPS Auto Salvage in GA, they usually have 99-04 rear ends listed on Ebay. You can get them at LKQ for less, but I rarely see V8 Mustangs at my local LKQs. The 8.8" rear end can take more power (not really an issue with our V6 cars) and it allows you to use quad-shocks (which I prefer to use on SRA cars).</blockquote>