Lude Generation

Hi guys - my door and rear parcel shelf speakers are well overdue for renewing, so I wonder if you can tell me what sizes will fit without modification front and back? Also, what brand(s) and models of speaker would you recommend? David

I think they are 5.25". However 6.5" will fit with a speaker ring.

For a rough drop in replacement coaxial speaker I would go for some hybrid audio imagine or the cheaper hybrid audio mirus.