This one got away, but check related items for something similar.
Dart Pro Iron Block 4125", Callies Crank, Brook Rods & Ross Pistons, North Coast Engines (Coffs Harbour) machining & parts, Schneider Billet Cam, Mallory Magneto & Coil, Enderle Pump, Front offset drive & timing cover (P/No. 1-2062), 64cc Alloy Ported Heads, Titanium Valves, Crower Cam Followers & Rocker Gear, 10.26 comp ratio