I have two large, black aluminum heat sinks available. 10-7/8" x 3-3/4" x 4-1/2" weight: 6.5 pounds 26 M3x.5 holes drilled & tapped on flat side Photos here: https://photos.app.goo.gl/9dTh1AcMsAj9D8NW8 Open to offers. Thanks, Robin Midgett K4IDC