I'd be very careful.
Thanks. I think that real heatsink stock is the way to go.

You didn't say you had a fat budget.
Not so much, but the power supply I'd use would be around $75.[attachment=o213400]

By the time I get the 338 heatsinks ($10, plus $10 more for shipping, plus $10 ea. for the 338's, the led driver is actually cheaper. Certainly neater, as well. Think I'm ready to start ordering. Do ya think I should do a build log?