Having owned high performance cars in my early twenties, I'd echo some of the comments here. Definitely what Riddler said with knobs on!!
Good shout on MR2. I had one, LOVED it, but it scared me regularly on wet roads and tried to kill me on a damp road with diesel on it at legal / sensible for the conditions speed - where other cars would have just twitched a little, the MR2 swapped ends like a spinning top and took me into the oncoming traffic both of us doing 40-50mph! Bear in mind I used to compete in karts and have/had pretty fast reactions + this was after 12 years of driving experience and owned the car for 3 years.
I started with a 1.1L Fiesta Popular Plus which had the obligatory impressive sound system. Actually, that and the fuel economy were the most impressive features. BUT, lacking the power and grip meant I learned a great deal about anticipation, reading the road and driving a car on it's handling limits which in that car with 165 tyres was just a case of keeping up with the traffic
. A lot to be said for all that in making you a far better road driver.
As a first car that has cool factor beyond the no. of speakers and amplifier wattage, why not consider something like an MX5, which will give you all the fun of rear drive but on a forgiving progressive chassis without the dangers/challenges the added power a 350 would bring? Or indeed the crippling insurance bill.
If u don't do many miles, how about some affordable retro cool / fun in a Triumph Spitfire or MGB roadster? Tonnes of fun to be had in those and you will be far cooler than any affordable modern metal! When I had the Fiesta, my mate had the 1.8 MG with cheaper insurance, more power and lots of controllable tail out fun.
One other thought - there is a tonne of grinning to be done in a hot/warm hatch. My Saxo VTR was a HUGE lot of fun but the build quality was a shocker. There are lots of other hot-ish hatches you can enjoy with good build quality.
My personal advice is, be patient, get something fun but predictable / moderate powered so as to build road safe experience and insurance years before getting a high performance car. It'll be much kinder to your wallet, your license and your long term safety. This is all advice I despised at your age but with hind sight wish I had taken.