Buick · Turbo Muscle · 1987
GNX
The turbocharged V6 that embarrassed V8s. Only 547 GNXs were built in 1987. All black, all fast, and now among the most collectible modern muscle cars.
1984
Grand National
1986
Intercooled
1987
GNX
GNX Market
● Recent Sales · Classic.comGNX '87
$184k
avg
Grand National 2nd gen
$50k
avg
Market values sourced from Classic.com, updated August 2026.
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