Should be a straight swap, but you may find your 2000 model is not CANBUS controlled as they changed on the 2000 plate. In which case the Concert II will turn off after an hour as they are all CANBUS models.
If you remove the power from the tape player, then plug it back in, if it then says SAFE when you turn it on it is not CANBUS, if it just works then it is CANBUS. Or you can look at the power connector and see if it has a yellow with redstripe wire (switched live) (non CANBUS) or just the red with white stripe (perm live)= CANBUS.
"How to tear apart the ties that bind, perhaps fcuk off might be too kind"
please help dont want to buy wrong one?