well since we are only blessed with a 100hp engine most mods will yeild relatively minor results.
assuming youre a bit of a diy-selfer you could:
take the final muffler off and put a tip there.
fab up a cold air intake using the stock maf housing
depending on your maintenance you could benefit from some taylor wires and motorcraft copper core plugs gapped to .060 - .065
thats all ive got
after spending under $100 you're engine should breathe a little better, have a smoother idle from the ignition, and have a slight exhaust tone.
lil note, please don't make a ton of threads for the same thing.... do try the search, it really helps lol. helped me quite a few times. [thumb]
well yeah if you remove the rear muffler (technically "resonator") you're gonna get a tone, but not slight  and as mentioned, there's that cheapo intake I wanted to do again (mentioned above, that is) those are good mods though as well, I forgot to mention wires, plugs, and coil pack are great upgrades as well.
helpful hint to what your car would sound like with the resonator cut off:
(erm...... it's a video, I'll find it, really, I swear. it's someone elses...)
Chopping the resonator off will have a little bit of a ricer-souding tone; if you know what I mean. It'll also yield no performance gain, just sound. If I were you, I would save up for a nice cat-back and a cold air intake.