I just seen your post...I can check the part # in the AM for you.
It's not clear what you are trying to accomplish Are you just trying to make room for any spare tire, or are you trying to get the FACTORY package (rim, tool box, jack, panel lining, trunk floor cover, spacer, etc). The factory package has 3 part numbers, which depend on the size of your car's tire/rim. All three have the P/N 06421-TZ3-XXXXX.... 17" rim = A70ZA, 18" rim = A90ZA, 19" rim = A80ZA. The difference between the three packages is the "Tire and Loading Information" labels that you affix to the door jamb.