I also subscribe to my Impala SS list (NAISSO) which is as active as our GTS list with technical info, probably more so because of shear #'s. Thought you might be interested in this little editorial on HID retrofits, as some have discussed it. http://lighting.mbz.org/tech/info/HID/conversion/ -- Dave Biasotti // Fremont, CA 93 GTS-1000 // 83 Honda CX650Turbo 95 BBB ImpalaSS