My Duster is 2950 and I have all steel doors and fenders and glass. I to am running a 340 and Im at 11.30s hoping for more tuning to drop a little more. I do have a lift off 6 pack hood and fiber glass bumper. I to ponder the idea of more weight loss heck I just put the bench back in because it was easier on my back. Your Dart looks nice I don't know how far you really want to go but if you do start dropping the weight keep the info coming good luck. Oh I spent a long day and night in Friday Harbor waiting on a ferry that never came. Beautiful island.