Body Style Difference between 1995 Z28 and Base Coupe?

Just out of plain curiosity, what is the difference between the 1995 body style 5.6 liter Z-28 and the 3.4 Liter v-6 Camaro? I mean, i know the Z has the trademark Z-28 stickers, but in terms of overall body style, if i got a Dual Exhaust on there, perhaps a Ram Air kit, and buy the Z-28 stickers am i okay? Or is there more to it? Lastly, my car has 168k on it, i bought it for 1500 dollars, is it worth it? How much Horsepower does the stock 3.4 V6 have? Thanks alot guys...