New to Mopar
Go pull a 5.9 Magnum from a pick and pull and swap it in. Use a carburetor and intake instead of EFI. You can use the serpentine belt setup or pull the front end off your LA engine and use the v-belt. Looks just like the LA. If you want to get crazy, swap heads and cam!! That will wake up your Dart!!
Here's a How-to article another member did
Diy - Magnum Swap!!