You should definitely get a home inspection done by an experience manufactured home inspector and not just any home inspector. They should thoroughly check your understructure to make sure the home is level and the pier jacks and wood pads are in good shape and securely placed in the right locations and tight.
Also make sure they check for rips or tears in your vapor barrier, aks varment barrier. Rodents and critters love to nest in this plenum and rats have been known to eat wiring. Make sure there's no drainage, dampness or mold issues.
Finally make sure the home has a Housing and Community Development (HCD) approved Earthquake Resistant Bracing System (ERBS) system under it as the entire desert area is in a Zone 4 seismic area which is the highest risk catagory.
If you have any other questions or concerns please feel free to contact us. We would be happy to refer you to a reliable MH inspector in your area. Good luck._________________________________