I asked in the competition forum but I

 

I think a reason you may not be getting much feedback is because few people perform this modification, unless they've got a dedicated track car or something breaks.

If I were in your shoes, I'd go with the 60. If you're not tracking the car, chances are you're never going to notice the difference in stiffness between the Street and Track version, and you'll want the softer rubber to absorb more vibration resulting in (theoretically) less noise in the cabin.

 

i got the street ones in my gsr/civic and it shook the hell out of the car! and i didn't even have the mount in the back.

 

i ordered the street ones but for some reason they sent me the track ones i would like the street ones. the track ones do have a slight vibration at certain rpm. but not bad at all once moving

 

Thanks for the input guys... As is I think I will go for the street version.

Does anyone know what the equivalent for the stock hardness would be?