Having owned 19 Turbo Buicks, 2 GNX's and a TTA my list of dislikes is long.
Turbo buicks in General:
Poor paint, poor body panel alignment, interior materials only designed for a predetermined usefull life, lack of willingness to have critical replacement parts available from the mfg (cranks, cam sensors, the list goes on), massive water leaks with T-Top cars, wind noise, A pillar rust on moon roof cars, factory tollerances way to large, low quality sheet metal prone to severe rust, slow power window motors, EASE OF THEFT due to simple starter switch mechanism with EASY access, lack of appropriate gauges, there are many more..........
GNX's
Well, if you actually have taken one apart you would witness a total hack job. Gauges condensate when A/C is on because ASC failed to seal / caulk the speedometer feed tube to the vent duct, according to my original Stewart Warner Gauge blueprints, ASC only required a + / - 10% guage accuracy (speedometer not included), Take a fender flair off and see the irratic cuts made by a sawz-all, with no rust inhibitor applied to the bare metal (I even have pictures of this on the ASC assembly line) Ever see the welds on the rear suspension pieces. I had to laugh, as someone last year at the Nats said it "looks like a weld by a 1st day welding student with his eyes closed. Fender vents were installed by clamping a metal jig to the fender and cutting the fender with a sawz-all, on many GNX's you can actually see the impression that was made by the jig in the paint, take a close look, as you may see a crease in the paint about 3/8" or so around the actaual vent itself embeded in the paint.
you can see photos of some of these GNX items at
www.hbscomputers.com/gnxparts1
TTA's,
Again low quality components, especially the leather seat material
Joe