A 1974 Duster - My 2nd one, 41 years later!
If you haven't already done so, check into using Fusor panel bonding adhesive. It works well using the flange tool you ordered and is as strong, or stronger than welding. Using the adhesive makes the lap seam a lot less prone to rust down the road. There are several different brands of the body panel adhesive, but I think the Fusor brand is standard bearer for all of them. Keep up the good work! :prayer: