Disabled Army veteran looking for vehicle or camper to live in - $1,234 (Great falls)

Hi my name is Travis and I'm a disabled Army veteran currently at the Fort Harrison VA hospital going through a PTSD treatment program.
I am graduating on the 12th of April and will be moving to Great Falls Montana.
I am in need of a vehicle or camper to live in.
I have some money and would be willing to put between $500-$700 down and make payments on anything I can find that is available.
Prefer a truck but am not picky.
Just wan something that is able to get registered and be able to pass out in.
Just don't have the ability to pay off outright.
I can provide proof of my service as well as my service connected disability claim from the Army.
Not looking for a hand out, just seeing if anyone has something they want to get rid of and is willing to take payments.
Also would be willing to work off some of the money doing any labor/ remodeling work.
Thank you for your time and I hope to hear from you soon.
Have a great day and God bless