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  1. Drivetrain
    Does anyone know if the 3.09 LSD differential bolts up into a 2015 Challenger rt plus with an A8? I wanted to use the 3.90 LSD but that’s too much gear for me and I’d like to keep my mileage relatively the same so the 3.09 would be perfect. Thanks.
  2. Performance Modifications
    Looking to see if I can put the 3.9 Scat Pack diff or Hellcat 3.7 diff into my car. What modifications I might need, and everything below the sun. Any basic information would help though! And if you have any other recommendations, I would love to hear them
  3. General Challenger Discussion
    Hi all, I have a 2010 Challenger, was an SE but ow has a 5.7L with 6.1L heads and cam, nag1, and Getrag 3.91 diff. All BMR and coilovers. I should have done a little more math homework before we went with the 3.91 gearing. It's a kick in the ass off the line but freeway and upper speeds clock...
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