Welcome to the site RCM.
There are few guys here that can post the pics for you. But as suggested post the VIN and any other numbers you gathered and many times the CRG may have some info on the car, from a past sale.
Tachometers: My early 10B L.A. 69 RS Z, did not come with a tach or gauges. Flat hood, but does have factory spoilers as best I can tell. I decided to put in a Stewart Warner Tach, and SW mechanical water and oil pressure gauges.
my late 08C norwood car is a factory U16 (tach only) car with center fuel gauge.
*I have seen a couple Z cars built around the August time frame with the center fuel gauge, but not many. Plus many guys have added the console over the years, so those U16 cars probably don't show up that often.
Steve I would't sweat having sold that Tach. I think a period correct tach would look cool, and would show how original and un-modified your car still is.