I had a hard time finding the 2822293 link( from crank to left pivot) when converting mine over, eventually found one. There's a guy in Canada selling a "kit" to modify a 2 speed link if you don't have any luck.

https://www.ebay.com/itm/204243821262?hash=item2f8de162ce:g:IasAAOSwGwlaDIGn&amdata=enc%3AAQAHAAAAoEft%2Bg5yfWMWAmkO%2Fhzfr7F9ig8RwGeraXDEogPQ%2Fh1HMhnKf0JtckIGZFJF967ikV7YcnRwD3qGFchrMdIeWbYDEOLIvleJ7CMqvVD8CJrw%2FbXg%2BMzFEJA4lxRPdMGjnN3b8oG3H%2BA1ydS4YA78oUsitPH%2BMRYKLmJDOjGcF8RROb55tBGo5ecC%2BGis%2BGg1D7XCKWlJgT0RwXmgWYlltxg%3D%7Ctkp%3ABk9SR6rNmefRYQ