Can anyone give me advice on changing the front speakers on my mk4 Fiesta? I have been looking at speaker adapters so i can use the original speaker points with speakers of a size of 130mm. Can i use any speakers that are 130mm with this adapter or will I need particular ones. Also is it easy to take the door trim off to get at the speakers and can i do a straight swap or do i need new cables etc.? Sorry for all the questions but im new to these things.

Thanks Stuart