mikebh8

That's the one, just look for the year as the newer ones look the same but they come with newer year models. Mine is only up to 2014 for example.
No need for extra software, windows firewall and antivirus turned off and it should work.

My point of view, no badges means they were worn out and so someone removed them, or the tailgate was painted for some reason and for that they removed them even if in good shape.
 
You can always ask and see if he sims honest about it but it should have the stickers on.
 
Hope it helps.

Hi, Adel, what year is it?
My Autodata shows that 2.8 engines were fitted on voyagers 2001-2008, grand voyagers 2001-2008 and grand voyagers 2008+ (which is the new shape). To all it showed a cam belt replacement with instructions and pictures.
Only the one 2008+ it does not show any data under timing belt section, that one is probably chain but I'm not sure.
I attached two pictures, in one is a 2.5/2.8 engine ( they look the same) and one with a picture taken from my car. If you have those labels bellow the red  "x" I marked n the engine picture it means it will have a cam belt.
I hope it helps.