Just to add to the confusion... where do the reset knobs come through? The wood grain or the lens of the gauges?
If the reset knobs come through the woodgrain, that's a 70-71 dash that should have a 8k tach.
If the reset knobs come through the lenses, then its a '72-'74 style that from the factory had a 7k tach. Notice on the pic with the seatbelt light there are no holes in the woodgrain near the bottom of the gauges so the rest knobs go through the lenses of the gauges.
Stuff gets changed through the years. 8k tachs can be bought.
The Fasten seatbelt deal I think was a 1974 seatbelt interlock deal.
The model year 1972 does not tell the whole story (Assuming your car is a 1972) as to what dash the car has. I have an early 1972 SBD 8/17/71and it has from the factory a 1971 style dash.
Most people do not add the seat belt light so I'm guessing you have a1974 Rally dash (possibly to replace a standard dash?) in your 1972 with a replacement 8k tach? Just a crazy guess....