Yeah, if ever there was a good time to have a GTO totalled under a standard insurance policy, the last 2 years have been really kind to the used car market in regards to values.
Still, there's more info needed to determine why the car would have been totalled and what it's current value is. A 10k mile garage queen GTO with no previous accidents is worth substantially more than one that has spent its entire life as a daily driver, sat outside, has over 100k miles, and has a prior accident or 2 under it's belt. Need to know where the OP's sits in that spectrum.