In Cleveland, it took about 18 months for the front fenders to perforate. The GT model was fun to drive though, they had a great suspension and handled as good as anything on the road back then.
You are right about Vegas. Great design, abysmal execution. I was driving a 67 Dodge Charger (Petty blue with a 383, sweetest car evah) during the oil embargo and thankfully was never tempted to sell it.