How much money do you have to spend? Be real.
What do you intend to do with the car? Street-driven only? Strip/street?
Do you have to pass emissions where you live?
Do you have a place to work on the car?
Do you have tools to work on the car?
Do you have knowledge of how to work on the car or have friends who know how and will help you?
Is this your only mode of transportation?
Do you have alternate means of transportation while the Dart is down for modifications?
Do you have the time to work on this car?