3.6 v6 in 99 Mustang, what can I do?

hello everyone, I'm new to the site, and thought some of you techies might lend me some wisdom... I bought a Crimson 99 mustang in july, and after two weeks, i realised everyone had one... So wanting to be different, I thought I'd make a few adjustments. After putting Blue street glow neons on, a buddy of mine said the blue didn't go well with the red of the car, I told him I'd sleep on it, and if I didn't like it in the morning I'd repaint the car. Needless to say, a set of Red neons mounted beside the blue ones was a cheaper route, and looked a bit shnazier, Not that a new paint job is out of the question. But it still wasen't enough, so I did some research and found a set of 110% bolt on lamborgini hinges, and I now have the best looking mustang in this area. I went on to put true dual exaust with flomaster mufflers, which increased the sound quite nicely. But again I'm not done, and not sure if I ever will be. (the nature of tinkering) so on to my question, what is the biggest baddest engine i can possibly fit under my hood? My cousin said I should go with a 302, because it fits, and the wiring harness connects the same... But everyone is doing that... Someone else told me I could extreamly rebuild a 302 to get a 396 stroker... But another buddy said the most I could get was a 346 out of it. My original pipe dream was to put a 427 super cobra jet under the hood, till some one said the only way I'd get that engine to go with that car was if I towed it from behind.... Does anyone have any ideas?