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post #4 of (permalink) Old 09-18-2013
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z28th1s's Avatar
Joined: Oct 2010
Location: Lynchburg
Posts: 1,831
The one thing you say you don't want to do (change the rear gears) is the single best mod to make your car quicker.

An automatic 'Premium' car will need some mods to keep up with an automatic 5.7 Hemi Challenger. I would get a tune to start. Other mods that you can get that aren't 'visible' are an aluminum driveshaft and some ported upper and lower intakes.
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