Originally Posted by PulpFriction

The cheapskate in me likes the 5-1/4” speakers hacked into the old hardware, plus the old foam seal is already there, but 6-1/2” speakers tend to sound better, especially if there’s no subwoofer.

As far as I can tell most of the affordable speakers are either 5-1/4” or 6-1/2”. If I need to do this again I’ll probably use 6-1/2” and the adaptors, and stick on some foam.

Of course the two approaches discussed here preserve the original grille. Another option is to hack out the old grille and size the hole for whatever speaker you bought, and use the ugly plastic grilles that come with them. Never considered that, would need to look at the car to see if that would introduce clearance issues.

Originally Posted by Cheap Guy

Glad you got it done! I just found that going with the Metra brackets was the easiest way to go, especially when replacing all four door speakers, especially with 6 1/2 speakers, which supposedly give better sound than smaller sizes that fit the hacked brackets.