I would only if I knew the history of the 98 to ensure that it has indeed been as reliable as your 2000 has. I'm sure TwoTwinTours would have something to say about this (he did the exact same thing, only from a 98 to a 95, and the 95 was nothing but a money pit).
Although .. Contours are so cheap nowadays ... if it's feasible for you to own both (2000 as a reliable daily driver, plus keeps the miles off the 98), that's the route I'd go ...
