Here is a web site that has it all the diffrent lights mentioned in this article and round ones they also carey leds that will work in just about every bulb number that you can think of. I've put them in the tail light position and now I'm modding up some for the front. I also changed my dash bulbs to blue and they work great. After I get them done to my liking I'LL post it with pictures here.
www.superbrightleds.com