I was wondering if anyone has a good way to remove the door sill pieces. all the little screws are rusted and i cant seem to drill them out.
They can be tough! The screws rust themselves into the holes. The heads get filled with dirt.
Give 'em a spray with some PB Blaster or Move-it. Let that sit for a day or 2. Clean out those screw heads as much as possible.
Or just grab the sill & bust it off. Once that's off, the screws will be sitting above the metal part of the sill. This'll give you something to grab onto. The screws will probably still have some of the plastic around the screws. Either try to break that off or grab the screw & the plastic with a pair of vise-grips. Get those grips on there so that you're crushing the plastic tight to the screw.
These truck's sill plates are the same for the driver side & the passenger side. Grab one from the wreckers from a passenger side. Those are always in way better shape. Cheap & plentiful, too.