Car selection question

OK, So I am looking to buy and prep an autoX/trackday car that I can still use as a daily driver. I have been the full spectrum of considerations from Porsche 944's to Nissan 240SX to all kinds of other wierd side tracks. Anyways, I was left wondering if an older 3 series would not be a good candidate. I was thinking of a coupe with a 5 speed, but needed input on years to choose and what I should look for in these cars. Thanks for your recomendation, and let me know if this car might possibly fit the criteria Im looking for (ie daily driver to race on weekends). Thanks for all your help and info.