Only thing I can offer is this: I picked up a National Cycle Light bar - got a real good deal on ebay - but it isn't very versatile. Installation is easy enough, but not much room for depth adjustment. Also, ifyou decide to change the angle of the road lights, it's pretty involved.
I like the NC bar, it looks good and does its job, but it's not a panacea.
I like the NC bar, it looks good and does its job, but it's not a panacea.