1988 Honda CRX
Crutchfield Customer Review (What's this?)
The picture shows metal brackets but I received plastic. I'm honestly glad they were plastic I had planed to use the metal ones as templates to build a plastic one. Plastic is easier to work with as I had to widen the hole to fit my Polk db651 speakers. I also had to mount them on the back of the bracket as if you front mount them the tweeter would hit the speaker grill.
Pros: Easy to work with plastic. Didn't have to trim to make them fit. Did have to trim the hole to make 6" 3/4 speakers work but I expected that.
Cons: Both sides are not the same texture. Because they cut the bracket out of the same template for each side one side is textured and the other side is smooth. If you don't plan to put your speaker grills back on that could be a problem as they will look weird.