worth remembering when hunting for parts that most car companies, even today, tried to keep production costs to a minimum. If they could get away with across the range parts (especially ones that require special tooling / pressing) then they would. Sill plates fall into this category, as do door handles, locks, armrests, jacks etc etc. I keep detailed pics when I find them from across model ranges to help identify parts from other cars as and when I need them....good luck
cheers Steve