I do as much as I can on my vehicle to save money and get a real satisfaction out of doing it myself. I don't always trust repair shops because honestly you have no idea who is competent. So I turn to these forums to get an understanding of what's involved before I tackle it myself. For instance, I've recently found out that there is a cabin filter that is replaceable but is not installed with the NV1500. I work in a dusty warehouse and would very much like to install these air filters.