Cabin air filter replacement and location

Then your vehicle isn't equipped with a cabin filter.

Hmm, none of my sources have anything about a cabin filter for 2001, only 2002 - 2004. Obviously from your pics I can tell there is indeed a filter there. The box will need to be taken apart for sure to get to the filter though.

I am not sure what you mean by A/C filter. Your A/C system does not have a filter; it has a receiver/drier that acts as a filtering agent to collect contaminants from the system. If this is what you mean, you have to have a shop to do it as the system needs to be evacuated properly. All the refrigerant has to be contained before the drier (located between the battery and radiator) can be removed. Once installed, the system has be re-evacuated before refrigerant can enter the system.

Let us know if this is what you need. If not, please re-phrase your question.