74 Duster Clutch Petal Doesn't Come Back Up

Don't mean to pee in your corn flakes, but it's a lot easier to change a pressure plate than it is to remove the over center spring. Easiest way I've ever heard of doing it is to depress the clutch pedal and hold it down. Then fill the gaps in the spring with washers. If you can get enough of them in there the spring will fall out in the floor. Good luck.