I've got and Audi A3 3 door model 8P at the moment and i want to upgrade the front door speakers. The headunit and everything else is getting sorted. What will fit in that front door? I know 5.25" is the biggest diameter but what about depth. It has come to my attention that the better components have a greater depth. Does anyone know how much room there is in the door for a speaker? Will Alpine X-Types fit in there? What will fit in there? What can i do to make things fit? Any and all help would be really really useful!!