Short version: This winter I replaced the slant 6 in my duster with a 273 and a 727 trans. Yesterday I got my driveshaft back from the shop that had shortened it. So I could take it for a test-drive for the first time today. I took it real slow and carefully, quite nervous! There was a noice like metal on metal a howling type of sound that appeared when I had driven only a couple of meters. I could also feel it in the car itself. Im guessing it is the breaks, but they did work perfectly before I started the project. Or maybe a bearing in the rear axle? Any ideas? I had too little time to continue today unfortunately.