im about to go pick up a 97 e420 and i can tell the aftermarket world is lackin in these cars. i always have to mod any car i get no matter what. im wondering what the w210 e55 amg 2.82 rear diff would do for me. any input? also does anyone know the part number for some denso irdium spark plugs for the engine. one more question. does this engine use coils or a distributor. i plan on making all my own mods for this car but not getting that crazy with it. im coming from an 01 1.8t a4 that i had fully built.