Just simply swapping the Ithaka ceramic holder and ceramic into an existing Ody costs $17.59, if no other Ithaka parts are upgraded. Assuming you have the resources to cut off the ground tube on the bottom of the new Ithaka holder.
The new Ithaka ceramic nut (inside cup) does fit the Ody center post's threads.
I ordered 2 large & small top caps, 2 top tanks, 2 GG style mouth pieces, 6 ceramics & 2 holders, and 2 inner top nuts, for $170. These are the parts I feel that are the upgrades that I wanted the most on my 2 Ody's, to give them Ithaka's features.
The new Ithaka ceramic nut (inside cup) does fit the Ody center post's threads.
I ordered 2 large & small top caps, 2 top tanks, 2 GG style mouth pieces, 6 ceramics & 2 holders, and 2 inner top nuts, for $170. These are the parts I feel that are the upgrades that I wanted the most on my 2 Ody's, to give them Ithaka's features.