[AcampoDave]

I tried poly cab cushions. NVH was pretty bad. Even the change in my ashtray vibrated from my exhaust. Took 'em out and went back to rubber. The difference was noticeable. I did a bit of research and the gist of it was; use poly for rotational things like a swaybar, panhard bar and anywhere cushioning isn't a factor. But for a smoother ride stick with rubber on A-arms, and body mounts. I did use poly in my trailing arms since they fall into the more rotational than cushioning catagory which seems to work out fine. Black poly is graphite impregnated to help reduce squeaks. Red is for a standout look and is not.