I would bet that you have 8k axles. Never have heard of any other than 7 and 8k axles, until 9k from Morryde on the IS units. You have the peninsula island, or the walkaround island? I would also believe the model #s on the door over the sales contract, unless there has been some bodywork done in the past.
Contact
DRV--gregweldon@drvsuites.com--with the VIN and he can clear it all up. Be patience, he is a one-man dept and stays covered up.