I tried contacting SoundsGoodStereo customer service twice via email, and called once during business hours - no response.
I bought the 6x9” version of the adapters. They’re great quality, but the 6x9 cut-outs don’t fit the speakers. The speakers don’t sit flush around the whole perimeter.
Unfortunately the internal diameter specs are not posted on the site, so there was no way to verify fit prior to purchase.
I reached out to SGS multiple times and received no response. Right now I’m stuck with $70 adapters that I’ll either have to modify, or will have to start from scratch with my search.