Hey mate, you are right nobody buys a car like this to pootle around in, but I'd echo some of the excellent advice already provided, find something else to get your adrenaline hit, something that is not gonna risk killing anyone apart from yourself.
I am a similar age and have driven a lot more 'quickly' during my youth, I was lucky any accidents that occurred just involved me and a hefty bill from a mechanic, that was enough to make me a bit more risk averse. Everyday I see some fucking stupid driving from all sorts of people and from what you've said you might be one of 'those' people, I hope that doesn't sound like a slight, I was that person aswell. If you end up crippling someone or killing someone that will be a massive burden on your conscience for the rest of your life.
Even if you could take all the other drivers out of the equation on public roads, there is still all the time unexpected hazards round the corner, a Horse, a cyclist, a massive pothole, some shit that has fallen of the back of a lorry, I probably only drive a 7-8/10ths on the road these days, hopefully I will get some trackdays at some point to get back to 10/10ths.
Also remember these cars are fairly rare and make stupid noises, very easy to become public enemy number 1 if you're regularly driving like a dick. Hope you get it sorted mate.
Teggs. :xwavey: