I am in the middle of my one-off 2 piece right now. I had a bad stock cover, machined the face off, made a ring to fit the outside, welded it on and am in the process of milling the outer cover now. The problem I found with avaliable covers was the depth would was too deep and still have room for the ringump area. Let me know how it goes. I will try to post pics when it is complete. Maybe with enough K5 owners interested, we could pool in and try for a sandcast 2 piece from the one for sale? I have a friend in the casting industry, I will talk with him soon.