I do not know about the 2000s, but the 1997 Nationals usually came with the prints in the owner's manual. Mine has them for my coach.
A lot changed between 1997 & 2000 for National, but in general the designs were consistent. That being the case I would think a standard stud finder would work.
Are you planning for the support to swing the tv down or what? I went through the tv upgrade and ended up just using the hutch's counter top for our 32" flat screen LCD.