What are the stock bulbs? If 63 use 81 instead. Twice as bright. If you have the room in the housing use 1129 for brake lights. It's a larger bulb so there may not be enough room. It can be used in the 37-38 housing, don't know about the 32. Paint the inside of your housings gloss white. After watching the video below I've been thinking about experimenting with this film in my 38's housings. I bought a few sheets to play with.