[JThiessen]

I had a late 80's 300Z a while back. Owned it for three months - couldn't get rid of it fast enough!
Yes, it was not as much as other "sports" cars to insure - but mine was not a turbo. Tex is correct - you should actually get a quote from you insurance agent to see how much ins is going to be. I'm betting its higher than you might think.
There just isn't any room in one of those cars - you wont be the one driving all your buddies to the game, thats for certain.

My recommendation is that if you are going to get a sports car, get one that is dirt cheap, and you can tear it down and rebuild it (enroll in some shop classes if they still have those). You can get just as good of performance out of an early 80's Mustang - and they will be cheaper (but maybe not insurance wise).
But then, just how fast do you need it to go? Every car out there can do the speed limit.....if your looking for something better than that, you might want to ask that insurance agent to calculate your rates with a few tickets, and more than likely an accident or two....