I purchased the Challenger as a zero optioned 3.5l SE on Halloween 2010 to be my daily driver. It's all been down hill form there. 

After about 10K of time behind the wheel, even with a custom tune, exhaust and lower gears, my 3.5l V6 muscle car just wasn't cutting. Being one to never leave well enough alone with the assistance of my buddy, a 6.1 Hemi was swapped in. The Red Death Machine was born. 

Horsepower & torque are like crack, cheap at first, super addicting and will eventually cost you every penny you have. That said, about 6 months after the Hemi swap, a Magnuson super charger was added...because high12's in a DD just weren't fast enough. LOL!

A few transmissions later a built unit was added with a 3K converter. Brakes, suspension, rear end, tires and a few creature comforts have all been addressed. Now, happily, it consistently runs mid 11's.  

Hemming Muscle Machines did an article on the car back in 2012 (released in 2013). Man, that was a lot of work. I think I used an entire bottle of wax prepping the thing. I scrapped about 3 pounds of rubber out of the rear wheel wells cleaning it up for the photo shoot.
Link--> https://www.hemmings.com/blog/article/base-model-monster-2010-dodge-challenger