Though the SD Formulas are rarer than the SD Trans Ams, they dont bring as much money. I would think it will probably bid to around $65k and wont make the reserve which I imagine is way above current market, given that a big collector has it and paid a bunch for it a year or two ago. It's a neat car, though the entire underside was painted black and should be red oxide primer.
There is a silver 73 SD auto Formula that has been on ebay for more than a year now. It was bought for $56k which was a good price for a car with a warranty replacement engine. The dealer that has it now has been advertising it for every week for a year with no interest whatsoever. He started at $110k and is now at $87k with zero interest in it. He also neglects to mention the replacement block and a bunch of added and removed options. Should have vinyl top, no power windows, no spoiler, and there is no such thing as "leather seats" in a 73, etc.
http://cgi.ebay.com/ebaymotors/Pontiac-T...#ht_2508wt_1021