Don't know, I bought the heads and the owner just gave me the block for free. I took it apart for learning purposes but its all there. Looks good though, you can still see the crisscross hatch pattern on the sleeves. No ridges on top.
A guy told me one time "don't let yourself get attached to anything you are not willing to walk out on in 30 seconds flat if you feel the heat from around the corner"