Review on Car Speaker Mounting Brackets with Wire Connectors - Compatible with Various GM GMC Models, Fits 6", 6.5" and 6.75" Speakers - Check Compatibility List Below by Caleb Eichbauer

So I bought these and they fit perfectly in the door where the stock speaker is. However, they didn't match the speakers I bought with them. I bought 2 pairs of Alpine Type R 6.5. They don't tell you what speakers they can install. So it's sort of a "hope they fit" scenario. Needless to say I haven't used them. As a result, I had to use self-tapping screws to mount the speakers. All in all, depending on what size and brand of speakers you're using, I'm sure they can be installed just fine with this product. 1 star only for uselessness. The straps worked great! The ones I give 5 stars!