Question and seeking plan for TDL / IMF Reference Standard

If I am not mistaken the original had B139, B110, Celestion HF 1300 and Coles 4001 drivers. Later versions had different tweets (HF 2001??) I recall.
TDL used its proprietary racetrack woofer, mids and tweeters. These may have been produced by ELAC, but I am not sure about that. Others may have more info.