I also got eBay mounts and it was better than the OEM mount that was in the car. Although OEM wasn’t even that bad or sagged just a little rotted. The response was notably tighter and car felt more preppy. Only time will tell how long they last.I bought the 3 mount set off Ebay, they look great, Function is another matter...
I replaced the right as it is the easiest to replace and yet the most complicated/likely problem child.
With the old mount out, it was clear IT was not OEM! It had a made in Taiwan sticker on it...
The new right mount seemed ok just running the engine unloaded.
But driving was the real test.
And it FAILED!! Big time!
It's MUCH worse than the mount that came out!
It would vibrate/resonate more and less as it went up through the rpms.
Time for an OEM mount!