Which Durometer Polyurethane Bushings are right for you? In @driveitryan’s video, He explains what durometer means, how to choose the right ones for your application, and how to easily swap them out. He also performs a Before/After Vibration Test in his 1995 Mazda Mx5 Miata to see if softer bushings help with interior NVH (Noise, Vibration, Harshness).
Miata mounts in video: https://store.awrracing.com/categories/Engine-Mounts/Mazda-Miata/
Link to replacement bushings: https://store.awrracing.com/replacement-bushings/