OK did this tonight, 30 minute job. A few thoughts/review:
THANKS TO RON @ WHOOSH
...for getting this to me so quickly.
THE PART
I ordered the street and race version and gave the race version to my buddy who also has an ST and just had a birthday. Once he installs he or I will post some impressions of the race version (the black one). The part is a piece of rubber, $32, seems like alot for a piece of rubber but it does fit perfectly so what the heck, meh. So my review here is of the softer street version (the yellow one).
INSTALL
Install is super easy, just jack the engine slightly. You might have to move the jack around a bit or up and down but once it's just right all works out. Instead of draining the coolant like the other dude suggested I just removed my passengers side headlight, unclipped the coolant tank, and moved it over to the left where the headlight was, super easy no issues no coolant no hoses no anything. I can install and reinstall the headlights now in 10 seconds since I've done them so much so this was easier for me than draining the tank and/or plugging the lines.
Next remove the 3 top nuts off the studs and the 3 bottom bolts. Pull out the mount. If it's stuck, like I said above just move the jack a bit in whatever way and the mount comes out super easy. Apply some grease or silicone, insert insert with the textured side down, insert O-ring, reinstall, torque to spec, reinstall coolant tank and headlight, you're done. Don't forget to plug your headlight back in. Reminder, lower 3 bolts are 48Nm, upper 3 nuts/studs are 80Nm.
REVIEW
NVH - there is a bit more. If you're a gearhead you might not notice or care. At idle there are a few more rattles. I didn't use the A/C when I drove it after install, but I imagine it would take the rattles up a notch. Overall it's not bad, but it is there. I'm super sensitive to sound and I hear everything so take my thoughts here with a grain of salt. Maybe the mount will break in a bit and the added NVH will disappear. No big deal though, it's really minimal. I imagine that if you're sensitive to rattles and etc. and just want your peace and quiet then the yellow street version is the one for you.
FEEL - there is a difference, you notice it for sure. It's not dramatic but it is definitely there. At every shift, whether going in or out of a gear, you notice it feeling firmer. When the car accelerates you notice less slop. Wasn't a lot of slop before, but there's less now. Again not dramatic but it's there, a nice small change. Your passenger won't notice it but you will. It's about half as noticeable as a Cobb motor mount upgrade. By Saturday I'll have forgotten I installed it because I'll be used to it.
In close, this is definitely a good mod for only $32, especially considering how easy install is. The black race version probably feels better but also adds more rattles, it's pretty firm whereas the yellow one I installed is pretty flexible. So take your pic. After doing this mod I'm likely to order the driver's side at some point. I'd really be interested to know some impressions from someone who installed the passenger's side first and then did the driver's later, what sort of difference the latter made.
In summary: Go get one!