There are pictures of the 3.2CSL mixed in here. Those are the ones with the bigger flares. Bigger motor and more power than the 3.0. I'll have one of each for those keeping score.
Sorry to be abit of a pedantic with this (especially since its abit dated), but the year is completely incorrect. The BMW in this thread is from 1975, which at that point it was a Group 5 Competitor in IMSA. The only touring car racing BMW from 1972 was this, the BMW 2800CS Alpina: