Snapey wrote:......Work is progressing with the Willys head, and given that we have developed what we believe to be about as good an upper chamber / head relief shape that we can, we are now looking at applying this to the Packard head. By machining the heads from solid billet aluminium alloy in 2 pieces we can create very high quality heads to very tight tolerances without the ever present issues that always seem to arise with castings - especially in small batches. We will also be able to adapt the design to the senior engines if there is some interest......