Im liking the look of this project. What about cutting down a pair of roof lights? Hardest part would be chroming them after the chop.
Edit- these are on garden trucking. Might be more suitable as it can have the led run through the mount. And if you want you could cap the end like i suggested above.
http://www.gardentrucking.com/detail...D#.WsIFFNCubqA