W2 Questions

You have the open chambered W2 race heads. You'll need the mounting blocks and good rocker shafts. The stands are milled to support the blocks. As already mentioned, most of the investment in these heads will be in the valvetrain. Also I would use the long race valves to get the installed height on the valve springs that you'll need to make the power that these heads are capable of. Get Ryan J to port them for you and you will really be surprised!!