if youre not the first owner i think that the only warranty that transfers over is part of the powertrain.. which you get 5 years/60k (unless original owner was family) you can also call isuzu with your VIN and they will tell you everything you need to know about the warranty, plus get your name in their system for bullitins (if there are anymore)

800-255-6727
Hours: 6 am to 5 pm (PST)
Monday - Friday

also try the search feature, many people have had issues with the wheels peeling... i dunno about rusting, but im sure you can find something

congrats on the VX, other manuals you might need you can download from www.tonemonday.com under the vehicross parts section