I was going to have one made but the folks doing 3D Printing around here that I talked to would not return my call for a quote. Call them back and they act like they don't care about doing business. So I put that project on the back burner. Here is a suggestion. I would make it 1/8 to 3/16 of an inch thick and then then send it off to a foundry and have it cast in Aluminum. I know there was never a cast top for these pumps but I think it would be better than trying to make a new top from steel and much cheaper than trying to get a die made. The cast will last much longer than steel would and not sure how long the 3D printed top will hold up out side in the elements for those that want to display it outside.