One question.

Which one should I get (Prothane street or Prothane race mounts)?

 

The race version will have more vibrations. I don't know how much more is...but they are supposed to be significantly stiffer than the street ones. I have the race ones and its not too bad. It vibes quite a bit on start up, when you're starting out in gear, when i'm driving at really low rpms. It just makes the stock vibrations more noticeable at times, its really not that bad. But I would imagine the street ones would cause a little less vibration. They are well worth it in my opinion.