mileage on your car
I did a title history search on my 73 /6. Based on declarations made when it changed hands (until the State of Texas allowed an exemption for exceeding the mechanical limits of the odometer), the mileage on the 73 is now at 293,349.3 There is no evidence that the cylinder head has come off of the engine. The automatic transmission has never been out of the car.
It leaks and burns oil usually to the tune of about a quart per 1200 miles. It is on at least its second radiator, carburetor, and fuel pump. The rear axle was replaced last year.
The old beast makes no rattles under the hood and still gets 16/25 mpg. When the road is straight and the law enforcement community is absent, it can push the needle past the century mark. I use the car regularly putting an average of 16k per year on it.