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Message: <blockquote data-quote="Warhorse Racing" data-source="post: 1518506" data-attributes="member: 23098">Your 2002 V6 came with a 7.5" rear end that uses 28-spline axles. You would need a 7.5" differential and gears. An 8.8" differential and gears won't fit in your housing. If you check with Mustang parts suppliers, you will see that they sell rear brake calipers that fit 94-04 GT/V6 Mustangs. Here's an example:[URL unfurl="true"]https://lmr.com/item/LRS-2320MK/mustang-rear-brake-caliper-pair-94-04-gt-v6[/URL]You will also see that they sell 28-spline axles for 99-04 Mustang GT/V6 models. Here's an example: [URL unfurl="true"]https://lmr.com/item/MOS-4235ME7/99-04-Mustang-Moser-28-Spline-5-Lug-Rear-Axles[/URL]Those axles are listed as fitting 99-04 7.5" & 8.8" rear ends. Keep in mind, 94-98 Mustangs had different axles and a different rear end housing. If you are looking for a complete swap that will work with your OEM V6 front brakes, a 99-04 GT swap is your best option (Bullitt & Mach 1 Mustangs had larger rear brakes). This guide might also be helpful:[URL unfurl="true"]https://lmr.com/products/Mustang-7-5-8-8-Rear-End-Axle-Info[/URL]</blockquote>