The 1969 Camaro was recently voted "Best Chevy of All-Time."
The '69 Z/28 is easily one of the most popular '60s Musclecars.
There is a very active market for them; nearly 100 have sold at auction over the past few years. There's always a few for sale on the various collector car sites. This is good and bad.
Good, as it provides quite a bit to choose from and establishes pricing.
Bad, because many of the cars offered have had extensive restoration, often with non-original, incorrect or re-stamped parts. Worse, some didn’t start life as a Z/28. There’s enough parts and info out there to build a very convincing fake.
Chevrolet made a number of equipment and production changes over the course of the production run. It would be difficult to learn enough about all of the ’69 Z/28 permutations to properly assess a potential purchase. You mentioned reproduction body tags. Experienced people can easily spot them but they have fooled many. And that’s not the only body tag problem; real Z/28 tags have been swapped onto other bodies.
If you are contemplating a purchase it is imperative to have the car inspected BEFORE you buy. Well worth the small expense. Remember someday you will want to sell it. A quality car will always sell.
Best guy for a 1st Gen Camaro:
http://www.z28camaro.com/