I have the quote for the heatsink plates. Water jet cut with the two through holes for mounting and the five #39 holes for mounting the transistors. Corners are a 1/8 inch radius. The five transistor holes are bare and would need to be tapped. $5.00 each. That's the quote. Is it worth it? I'll resell'em for cost plus shipping. This is from a service here in Las Vegas. My Brother might get them cheaper but he's real busy at the moment.