These are the part numbers for my rev5

(which I'm sure is the same for the rev4, so you'd have to check with the parts dude if the same for rev3

(94+)).

.

.

90917-06057

(between backbox

& cat)
90917-06054

(between b-pipe

& cat)

If you've got a decat to put on, then your probably just best off getting 2 of the first part number.

** I have assumed your car is an NA

**