[RarlyL8]

Thank you! The heat exchanger design remains bolt-on so they can be removed if damaged or not needed. For ducting we recommend the orange high-temp SCAT tubing from the aircraft industry. That type hose has a wire slinky inside so you can turn it and it will hold shape which allows the hose to not touch the header pipes. I had that setup on the red rocket for a couple years and it worked flawlessly. You can also use metal pipe but that is much more expensive. We have fixtures now for just about any configuration imaginable so the cost for custom is coming down as the "custom" becomes "options". The set pictured was only a few hundred dollars more than our standard 930 headers.