Up for sale here is this new brand new capacitor adapter circuit board.  This is designed to replace a vintage 50mm or 51mm (2") diameter capacitor and clamp.  You can remove the old cap/clamp and bolt this right where the old capacitor was.  This has mounting holes for a 10mm pitch snap-in cap and a 4-pin capacitor (like this one).  This is great for replacing vintage main filter caps with much smaller ones. 

The board has mounting holes for one capacitor, plus holes at the edges for the positive and negative wires.  Pretty neat!

I also have 63.5mm (2.5") versions available.

US shipping and handling is $6, and international is $20, no matter what quantity you buy. All my small parts are set up for combined shipping, so you can just use the "add to cart" feature and then check out at once to get discounted shipping. If you have any questions, please ask.