swapping from 4l60e to 4l80e and need the os.dont really want to do the relay mode to run 4l60e tune.what are my options if I cant find a matching OS?done checked dropbox no luck.THANKS
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swapping from 4l60e to 4l80e and need the os.dont really want to do the relay mode to run 4l60e tune.what are my options if I cant find a matching OS?done checked dropbox no luck.THANKS