Contact Cruzbike via e-mail and ask if they have what you need. Over the years I have purchased an entire V20 boom assembly to put on my V2 (which is the current S40 design), derailleur dropouts, a new headrest bar, replacement headrest pads, and, when I decided to move to the shorter chainstays for all three of my CBs, what arrived was of the current S40 clamp style, to which I said, "oh, sweet!" I imagine they have all three chainstay lengths on hand. They may well have extra boom clamps, and one might be able to put together the current S40 front end. Cruzbike support has been great.