Hello:
A short piece of advice...if you decide to polish your trim by yourself...find some junk trim and try polishing it to the point you would want on your car.
Contrary to what you may think or have been told alumimnum is not easy to do satisfactory. Aa buffer will easily burn it and then you have a real problem..hate wet sanding paint? wait till you wet sand trim....
Trim refinishing is kinda like brain surgery if you don't have the patience and talent to invest in it....best leave it to the professionals.


Maynard