you want to know if you can register your truck as a 'passenger' class vehicle?
do not
you want to know how can you find the unloaded weight of your truck?
Yes
The unloaded weight of your truck is stamped on a metal plate located on the door of your vehicle. The curb weight is also listed on your certificate of title. The curb weight is different from the maximum gross weight MGW indicated in your registration documents.
What should I do if I use the van without the required modifications?
you must register it in the business registration class.
What is the main topic of this information?
of course the main topic is Registration
What requirements must I meet if I want to register it as a passenger class?
You must meet the following conditions:    the van does not have any commercials and is used exclusively for non-commercial purposes s    A camper cover that has one or more side windows completely encloses the truck bed, s    the pick-up truck has seats, seat accessories or camping equipment installed on the bed of the 'camping equipment' truck indicates that you have a bed, stove or refrigerator in the vehicle
My pick-up is rented or leased. What do I need to do?