Yeah I was out last night and saw an 80s or early 90s vette that was riced. I almost thought it was a 3rd gen firebird with major conversions by the way the front looked.
Yeah the car was probably fast, It's a corvette!
But, very few people will want that car now that it's been "customized."
So it's like, if you do looks, don't go so far that you're the only one that would love your car. Just make the car a little better than it already is, don't change it to an entirely different car.
What year/trim is your 300zx btw?