From my days as a road warrior with my G1,
this worked fantastic from ProClips. Not a cheap option but well worth it IMO for perfect mounting and no performance probs. Plan to do same for this G2 I'm getting but have not yet done so.
Also note, in the past, I had a problem with some whining and static that ended up being my audio cord (running from headphone output to my car's AUX input). Turned out to be the wire going bad so remember you get what you pay for on the audio hookups.)