Hi Boxhead,
the ducts came from Finishline in Florida. Ive seen similar ducts including all necessary hardware on the Everett Morrison site and at a better price.
www.everett-morrison.com
Theyve got some good accessories for our cars. I was quite impressed with their aluminium engine bay kit that covers the footboxes and the firewall. I was told that Ian took his moulds from one of their shells and adapted it to his frame. It looks about right if you have a good look at the E M gallery.
Regards.