Almost two year old article extolling the virtues of the SE Trans Ams. He does point out that the "1970-1974 TAs are already bona fide collector cars due to their scarcity and powerful Ram Air and Super Duty engines".
http://www.businessweek.com/autos/content/aug2006/bw20060825_971142.htm?campaign_id=rss_nullAnother interesting datapoint is the valuation of $13000 - $17000 value for an SE.
Reading between the lines, perhaps the sleeper of the 2nd generation birds will be the 80/81 pacecars because of their limited production.