I just installed some new housings I got from rock auto.....my old 1s were cracked and waaaaay dull.........I have already changed out the burnt sockets and installed LEDs......the new 1s were from tawian but looked very nice.........GM housing were like 60 a piece ...........these were 26 a piece so a good savings.......pulling the old 1s i noticed there was NO silver shiny reflective stuff inside the housing...........the new 1s were nice n shiny and reflective........with the LEDs in the old housing they were really not that bright.....i blamed the LEDs on that........now with the new housing they are TWICE as bright now.....i cant get over how bright they are......so if you are thinking about it......dont hesitant............get new housings today !!!!!