Need some opinions folks. Daughters 1995 325i sedan needs a new head unit (volume is very scratchy when adjusting). Been looking around and see lots that will work but don't see anything about new head units controlling the trunk mounted CD player. I realize new head units come with in dash CD players and IPOD connections but I need to know if others simply disconnect the original CD player and let it sit or are there aftermarket head units that will control the trunk CD player? Also any comments on which units others have bought?