Whatev'ah!
I"m a car guy, not a Blue Oval nut or a Mopar freak.
What I do know is the 2nd Gen Viper is NA while the GT40 is relying on boost. Viper is 75-80K and GT40 is projected to be around 100K. The car rags will have with these two romping through many a test.
The SRT Ram will be awesome, I'm sure 5-8K more than a Lightning but performance wise, it will be well worth it.
the Z06 for 52K is still the hands down winner for HP/$ in my book.