how much of a benefit is there to doing this? Is the vibration bad at all, bareable or what. How long is the break in period. Arew they cunts in cold(meaning they get harder and vibrate more) etc. I've been thinking about doing this, just not sure. Also, how hard are they to install, I hear the front is not so bad, but the back is a b****. How long do you think it would take if I took the lazy way out and paid a shop to do it? I would say it shouldn't take too long right? I'm just asking this, cause I don't really wanna install them myself, kinda lazy, and have a lack of tools, knowledge, patiences etc. So give me a rough estimate on the time it would take a pro shop to install these. One that knows the MSP's engine bay very well BTW.