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I did not know they were interchangeable when I ordered mine. Normally when they are Porsche supersedes the part number. Maybe it's a build date issue, the 986 numbered track arms have been sitting around longer then the 987 ones? Once they run out of them they supersede the number?
Like if you go to Pelican to order a motor mount, you now get the 987-375-023-05 part number.
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2003 Boxster S
| 987 Air Box | K&N Air Filter | 76mm Intake Pipe| 996 76mm TB | 997 Distribution T | Secondary Cat Delete Pipes | Borla Muffler | NHP 200 Cell Exhaust Headers |
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