Call around. I have a friend at a local dealership calling around today to see what he could expect to get for an incoming GTS in trade for a 2000. If the dealers need to check the pulse of the market you should too. Locally I am seeing showroom 2000's offered at $67k, ACR's $73k including the a/c added back in. If you get a good deal you may get a little less on your trade in but still come out way ahead.
It's amazing how little the 96's with high miles can bring. High bid on one today, with headers, was $35k, with all other bids at $30k and under.