Hi,I have a set of 471's, I got them for a customer that was going to build supercharged motor, I took them apart and got rid of the vales and springs, removed all the broken bolts, he changed his mind and decided to go with a high compression carbureted motor, I paid $200.00 for the heads, you can have them for that, but I am in California, shipping might cost a bunch. I can post a picture if you want.
Ed