Just be ready to do the math and don't limit yourself to "old" style leds. I have installed LED lighting around my house and on my Volkswagons. Most of my lights are 6.7VDC at 700mA. I have four new ones that are 14VDC at 1Amp. I have a single killer that is 6.7VDC at 8 amps. Yes, eight. If I can learn how to adjust the power, I'm interested in this new 40W led that runs at 44VDC and the appropriate amperage.
I am considering building a twin mount of either the 6.7V or 14V for my Big Dummy.