I'm now running SMD 5050 13-LED 1157 bulbs in the $99 ebay coupe tails. A lot brighter than the older bubble-looking LEDs - must have doubled the output. Also, I made a rookie mistake in using clear bulbs in a red housing originally - it looked pink and weak. My brother said fail - of course he was behind me so the only fail was in the bulbs.....
Oh, and don't buy "tower" LED's for coupe tails - they don't fit if the bulb is any taller than a stock 1157.
I really want to add an LED strip or 2 about 9-10" long or 2 x 5" on each side, but I am worried about the intensity of the strips I have seen. There is room to install them attached to the removable bulb holder section so no need to mount in the light housing. Like this:
[ ___*___*] [*___*___ ]
Here are some strips I have been looking at, chime in if you have any thoughts on this. Every time I see a video on YouTube of s13 LED lights it seems to be hundreds of LED's, circuit boards and a lot of money.
http://www.customdynamics.com/Light_bars.htm
http://www.watsons-streetworks.com/led3 ... ights.html
http://www.spoilerlights.com/servlet/StoreFront