I dont buy it. The new 8 spd and Hemi will get you going a bit quicker but not by much.
The V6 will still be the V6 , The HP numbers havent changed and the weight of the vehicles hasnt changed.
I believe it's more efficient overall but after driving one a 14 R/T with the 8 speed yesterday, its definetely smoother up to 60-65mph cruizing speed BUT it doesnt feel like a night and day difference.
Scott your GC is a Rocket congrats...