I took my engine to the machine this week and now we have a problem. We are having problem finding pistons for it. Here is what I have. It is a standard bore 427 block. I do not want to bore it if I don't have to. I am using a 428 crank and a set of 72cc Edelbrock heads. So what I want is a piston with 4.233" bore with a compression height of 1.665 and about a 20cc dish in them. That will give me around a 10-1 compression ratio. So my question is does anyone know where I can find such a piston. Keith Black makes one but the smallest bore they have is 4.250" so I would have to bore the block to use them. Other than custom made pistons I might be out of luck.