After purchasing a SSD last week and turned on without a traditional HD plugged in I was amazed at how quiet my PC was! it wasn't loud before but the HD hum was the loudest noise, something had to be done.
I planned to bungee mount my spinning HD and then isolate the HD cage from the rest of the system.
First I drilled out the rivets to the hard drive bay and removed it from the case, I then removed all the rivets holding in the hard drive rails.
This allowed enough space for a bungee mod without the drives fouling on the case,
I mounted bolts so they would protrude toward the front for remounting the cage, during remounting I also used the now redundant grommets, lian li supplied for the original HD mounts, to rubber isolate the HD cage.
You cant really see but there are grommets between the cage and the case, but you can see that there is a gap and the cage does not touch the case,
I didnt over tighten the nuts holding the cage onto the case, so as to not crush the rubber, and used thread lock to ensure they dont come undone.
The result, you cannot hear the HD anymore, before you could feel the vibration on the outside of the case, now there is minimal vibration felt on the cage and absolutely none where the cage mounts to the case.
Overall an excellent modification and combined with a top vent and all fans @7v makes for a very cool and quiet pc.
) and heard the noise of the xilence redwing on my CPU cooler (forgot to connect the case fans, so there was only the redwing and my PSU fan spinning) which was practically silent (and i mean silent), going to have to replace the case fans though, massively loud 
