h1 help

[evomind2]

hey folks
im sure its been covered, but my search brought in way too many variables to make it worthwhile, so ill just ask.....
i have an h3 now and was looking to upgrade to an SUT. then i started thinking abt getting like a 1999 or 2000 H1 convertible.
i dont know much at all abt them, but im seeing prices there in the 40's for vehicles with abt 45-65k miles.
are the 2001's substantially different? what do i want to watch out for?
do those model years need anything upgraded or anything?
can u drive these down the highway? someone told me they will only do abt 65mph...?
lastly, what kind of mpg are u folks seeing?
thanks much