Just got my heat sinks from heatsinks USA. Took 2 days to get here, not bad. I got 2 18" by 8.5" aluminum heatsinks. I am still waiting for my rapid led kits, they may arrive today. So now I am just sorting out how I want to lay out my colors. I've got 20 royal blues, 13 cool whites, 2 greens and 1 red per fixture. I saw a picture of someone using coins to help with the layout, seemed like a good idea. Pennies are blue, dimes are white, nickels are green the the quarter is the red.