This thread is getting super off topic. I like it.
Drivetrain layout and speed are only one of many considerations for a good track car in my opinion. Reliability, cheapness and availability of parts, longevity, suitability for any potential race classes, are all things that might be a consideration for a thoughtful track goer. An Integra will be much easier on brakes and tyres for example than an Evo, and I would rather buy replacement OEM parts for an Integra than an Exige. Too often people focus on the ultimate time and buying baller parts and cars to achieve said time, whereas often the challenge and enjoyment is in developing a car and improving skills. A fast driver in a slow car will often beat a fast car with a slow driver.
Please don't cut a hole in your car.
Not trying to be an arse but if you wanted a car that you could track whenever you feel like you could have spent some of your money a little better. A few dollars on some brake pads, braided lines perhaps, a change of all fluids with some quality gear, a pair of camber bolts for the front and a stiffer rear sway bar. $500-600 and you would have a lot more fun on track. As it is you might find your brakes going away very quickly and you will burn the inside front tyre out of a lot of corners.
However too many people on this forum and others seem to think that tracking your car automatically makes you an awesome kid, and look down on those that don't. Track days are fun but they certainly aren't for everyone :).