A 2000 x reg will be a mk1 S type, the cup holder is screwed to the centre consol from underneath. I found this out when I got a unit out of a scrapper for my '99 it doesn't matter if you break the tabs off as it never bothered mine. Not had anything to do with the earlier sat nav but it could be the disc ar the player. Hesitating and flat spot could be a failing coil, needs to be code read to confirm.