Viper engine and transmission in my 1974 Dart Swinger

I am really putting a lot of thought into this build as well. i just brought my 68 cuda home and it looks so wide open in the engine bay with the 318. Besides, a 500hp build on a 340 and converting my car to a 4 speed would probably run me $6k and a viper $7k-$8k. I think it's worth the extra. As far as the extra weight, I'm going to do fiberglass in the front and a hotchkis suspension to make it handle. I mean, it's rare enough to see a cuda running through my city, let alone a cuda with a viper motor. Do it. I'm going to.
I'll definitely keep up with this thread. P.s. I already have the wife's approval.