YS4Z-7412-JA
and
YS4Z-7412-HA
not sure which one is which
i think "ja" is the upper


1998.5 Diamond White Pearl SVT (#4725) custom exhaust/intake k&N/mod'ed y-pipe slotted rotors/greenstuff pads/SS lines cougar trans/FSVT shift tower/Torsen 16lb. flywheel 18" Velox VX-8's with some rubba bands