Both of us I think,I don't have any pics of my mount on my thread so I am assuming lee 2 is referring to you're mount,mine is the same as yours so if yours is a nylon bush I'm guessing mine is too.
If it is nylon it makes driving my car quite tiring as the noise,clunking and vibration is terrible.
Would sound great in a track car but It annoys me every time I back if and it clunks through the floor.
Trying a standard mount on,see how I get on with that.
Couldn't find new repro mounts on rs breakers page they are remaking some nice parts.