I'm looking at a 2004 Isuzu Nqr Crew Cab diesel with 98,000 miles on it. How reliable are they. Do they have a lot of breakdowns or mechanical problems. The one I'm looking at has a landscape body on it, to get rid of trailer. It is a very clean truck. What should I look at particularly when inspecting the truck and how much do you think it is worth? Any help appreciated, I'm new to cabovers. Thanks Again.