Hi Mark !
What does the Duster have over the Dart ? Or are you just tired of the Dart and it's time for a new project. I sure can get burnt out on the same car over a period of time if it just doesn't 'do it' for me anymore...Then there are those 'keepers' that you'll NEVER let go !
The Duster is needing a total teardown and build up to get it to the same level as the Dart. Is the Duster a 'proven' combination ?