Im looking to replace all my speakers, its too cold right now to just get out there and tear into just yet but im making purchases right now. im wondering exactly which data bus is appropriate for my application and what size the door speakers are... can i use 6.5 in components? ive searched the forums and there is tons of info, but it also seems like tons of conflicting information.. just want the most up to date information, sorry if i couldn't find the answers i need on my own :/ again this is in a 2001 eldorado esc with onstar, non bose system with a tape deck... thanks in advance!