The cabin air filter should be looked at once a year.
The other issues are common. The diff bushing is a royal pita. It's about a day and a half job. I've done 3 of them. If you were closer. I'll do it for a couple of hundred. If they replace it with oem. They replace the whole sub-frame. You can buy aftermarket bushings.
Poly bushings. $99.99
https://www.z1motorsports.com/z1-pro...t-p-10356.html
Solid bushings. $179.00
https://www.splparts.com/products/37...-bushings.html
I have the solid bushings in my Z.