I have heard there are some issues with GNX#451. They would have lined up at the door and it would have sold in a NY Minit for the asking price if not. Original GNX Parts for these cars are bringing big bucks and they are creating very accurate clones these days so you need to do your homework just as you would when buying any other Musclecar.
BTW, You would look good in a GNX Darren.