i spent the day screwing with my truck and decided to whip out the buffer and some mild compound i didn't even bother to take the lights off and did them inplace, i used a rotary buffer with a wool bonnet and after a minute or two each they looked pretty good, id say they went from generic wally world flash light quality to mag light quality, they still stink compared to my bimmer but i may hold off buying sport lights for a while as they now throw enough light to reflect off the road signs 9 years and 307k miles funks up the lenses pretty bad, id take pictures but you all know what yellow/clear lights look like :-laf