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1st Hemi, 2017 Challenger Hellcat after "51-Years"
Challenger SRT Hellcat
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Terry
 

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Challenger SRT Hellcat
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Wow, this is great news!
I can attest to Double R Diesel's product and customer service. I purchased a 2018 6 Speed Cummins for my new tow rig. I installed a towing clutch and a tune, immediately.
I flew to South Carolina to pick up the truck and race trailer and bring it back to Pennsylvania. The tune was spot-on and the truck ran flawlessly. View attachment 444089
 
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