The 90-96 is the Z32. The 84-88 is the Z31
The engine is just like any other car engine in reliability. It’s just that young kids get it, think they’re the shit and beat the living shit out of the engine with hard unknowing driving to show off. They get non-stop tickets and can’t afford the insurance then have to sell it because Mommy won’t stand for paying such high numbers yearly. They don’t want to pay gas and maintenance so they run it dry and/or never do an oil change while doing all this and the car gets f&#$ed