Smiths heater inlet duct...

[David]

I finally found some 100mm ducting at Merlin Motorsport that's suitable for connection to the heater. I have the other end dangling down towards the road at present. Hopefully I'll reduce the engine compartment fumes that were getting pulled into the cockpit with the hood up and heater on.

I need to take a 100mm hole out of the side panel to get the aluminium air inlet in place. Any ideas on cutting that nicely without mashing the louvres too much would be welcomed!