Has anyone fitted Super Pro SPF1978K out rigger bush inserts?

If so how did you find them and did you get any more nvh?

 

I fitted the whiteline equivalent to my blobeye sti, car felt a lot tighter at the back and more connected but..... Loads of noise and whine at about 60 -70 mph so I removed them.

 

I've ordered some super pro ones.
If they transmit to much nvh I will cut copies out of rubber and use that.
Hopefully that will be better than polyurethane at absorbing noise.

 

I fitted the inserts and I will be removing them.
They transmit horrid diff noises and road noise into the cabin.
The car did feel like more solid at the rear but not in a good way.

I cut a copy of the top bush out of rubber sheet hoping that would reduce nvh and it didn't work.

Oh well lesson learned.