one of the most informative posts I've read here. Jim, please post more info as you get it. I've been interested in this for a while. Seeing as I plan to keep my car for a long time, this may make sense for me too. Best time to do it as you implied is when you have to replace the unit anyway. Thanks!

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'82 300SD - 361K mi - "Blue"

"Good judgement comes from experience. Experience comes from bad judgement."

listen, look, .........and duck.