Viper engine and transmission in my 1974 Dart Swinger

I considered doing something similar at some point, but was told that the truck engines are not worth using. That's why you can get them a lot cheaper than a car engine.
I dunno. The thing would still have a stout torque curve that looks like a cross section of Kansas. It could be a bunch of fun in a 3200-lb street car. It'd probably absolutely require an electric fan due to space restrictions, but I'm not sure what the dimensions really are. My experience with the V-10 is conspicuously lacking.