web store or brick?
best web is.
http://www.rockauto.com/
the place, shows just how many makers , (good) make the part.
choices.
lots of choices, based on sub model, seen clearly here.
SR5, GTS., LE, DLX.
http://www.rockauto.com/catalog/raframecatalog.php?carcode=1275173&parttype=4152
if no sure what you have, or are worried, id be.
id buy over the counter at NAPA, good parts (no chin@ junk)
and can match it, walk in , throw it on the counter.
match it. saves all that grief of getting wrong parts in mail.