How to improve a 1999 Ford Taurus SE sedan 3.0L V6?

So I bought my grandparents car off them and it runs well and I'm not going for a full blown rally car I just want a sleeper that I can take to the track every now and again and be able to out perform a few unknowing friends, so how can I squeeze a little more hp out of it? (I don't care about suspension cause this is just a sleeper)

Just let it sleep

Unless you change the cam, there are no upgrades that'll make a hill o beans difference.