Some people are just looking for history, or nostalgia. The GNX had 360 Ft. lb. not 310; the regular 1987 GN produced 355 Ft. lb. that year. And people can still buy new Mustangs if that's all they want, but with under 600 GNXs built 35 years ago, they're a bit scarcer and probably the only mid 13 second family car built in the 80s. There are cheaper and faster cars than a hemi-cuda too, but some people just know what they want.
Yeah but... they made more Buick Regal coupes in almost any one of those model years that Chrysler built E body Barracudas in 5 model years.10 times as many all together. My point was the body that the GNX is built on is anything but rare or unique. Like I said, an easy car to clone.