I'm having a hard time finding the right springs for my Van, I can find them for the year but not the engine. The Moog C822 doesn't list for my engine but does for the diesel, I'm guessing they are heavier? The Moog C820 maybe, but again doesn't list it for mine. Can some one guide me, I believe my stock OEM # is FTUZ13510A does anyone know what Moog that translates to?

1997 E350 Club Wagon EXT 5.4L.