I have to agree a lot with the things that were posted above. You'll probably need to find out why your wife doesn't like the Z28, but some guess possibilities include the noise, possible boy-racer looks (if you put any body kits or exterior mods on it), that she thinks it compels you to drive too fast/uncarefully, or that it has too much of a younger driver/teenager image for her (may bring back memories of bad dates in high school or whatnot).
In those cases, either a Corvette or GTO (unmodified) may possibly be easier for her to accept. It will depend on her personal tastes. The sleek lines of the Corvette (which is usually associated with older people than a Camaro) may be appealing to her. Or she may like the closer-to-a-family-car looks of a GTO. I think a GTO would probably be easier to get away with.
Depending on her personality again, you might have her test drive the Goat--she might take a liking to it. The Corvette sits lower, and if she doesn't like the lowness of the Camaro, she may not be so inclined to drive the 'Vette. Of course, if she is one of those people who freak out over even a 150 hp car as being "too much", then forget her liking either after a test drive.
