JIC was made in japan, or was said to be by the last rep Steve. There was a post referring to this on myg37, but i'm on the iPhone so I'll try and find it later

 

I've got the JICs, they're great all around coilovers.

I actually did the install myself, pretty easy once you've done it a few times.

As for noises don't expect them to reduce, they might change but they won't be eliminated.