Peter I imagine with a regular L-series head (say P90 for example) you already know what areas to take out and move around, port, tickle etc.. for the optimum flow based on having done so many in the past.
When it comes to a complete unknown such as this engine head, with very few people having even seen 1 or worked on this cylinder head in the past, what approach to do you take to optimise flow? Do you have computer based modeling that you can rely on to help guide you? Or are you flying by the seat of your pants on something like this?
Given how rare the head is, how can you be confident to know where to remove material etc..? Not questioning your skills obviously, rather interested in your approach with such a unique piece?
By the way is the client located in Australia or Japan or somewhere else?