You make an excellant point. My current 340 runs awesome but the more I modify, the more side effects show up as well regarding drivability and temperament. Since I'm 90% street and 10% track that has been one of my biggest concerns. I finally get the performance but at what cost.
I will begin looking more into the entire build process of the 392 hemi/6 speed route. Other than ebay, does anyone have reputable sources that sell modern powertrains like this? I'm all ears and looking forward to this build