In the late 70's and into the 80's government regulations killed the big blocks of the day and displacements decreased. So the make more power they turbocharged, everything. This is one of the cheapest running GPZ's I've seen for sale. Miles are a little high but thing thing will probably run forever. From wiki land, "It is widely considered to be the "best" factory turbo produced by the Japanese manufacturers."
Oh yeah it's runs a 10.71 in the quarter, stock.
More photos and contact info can be found here on Craigslist in Columbus, Ohio.