has a 1994 z28 ever had a 6 cylinder engine?

A 350 MPFI (LT1) Small Block V-8 engine, which was introduced in the Corvette in 1992, was standard in the Z28. -- http://en.wikipedia.org/wiki/Chevrolet_Camaro

it might have just a decal added. v-6 was an RS.

Z28 is always a V8.

It may be a "clone" Basically a V6 version that someone prettied up to make it look like a Z28. I had a friend who bought a 04 Mustang, used, thinking it was a GT, paid the GT price for it, it looked the part, had the correct decals, hood scoop, and even the right bumper covers with the GT emblems in them, It even had dual exhaust, but a few months after she bought it, she had me look at something under the hood, and to my surprise and hers, it was a V6. We looked up the VIN, and it was sure enough an LX V6 model. It's been a good car, cool looking too, but she overpaid by several thousand dollars, because the dealership even thought it was a legitimate GT. Always be careful about that kind of stuff, not everyone is honest.

Fake4! Never V6 Z28............either owner replaced after blowing the LT1or just stickered up a std version V6

Fake! Never V6 Z28............either owner replaced after blowing the LT1or just stickered up a std version V6

I agree with everyone that is calling fake. I have been running into a big problem lately with fakes. I have been buying and selling F-Boby style sports car for awhile know and there is alot of fake out there. I run into a fake for every real one I find it seems like. The best thing to do is get the VIN and look up the VIN decoder online and it will tell you everything and more then you need to know.