They work fine with NO modification. I installed one on my ATX. It's just a trim ring that goes around the shifter console. Just follow the instructions about not overtightening the screws and you'll be fine...about a 10 minute install.
I have the silver one and it doesn't really look like the brushed aluminum. It's more like a flat silver finish no texture or brushed look at all and definitely not polished. I do agree with jisturm, if you have the brushed aluminum center console the silver is the one to go with, it would come closer to going with than the chrome.