THIS IS ABOUT A PERFECT COPY OF THE ORIDGINAL C70M DOWN DRAFT CARBS. THIS IS JETTED FOR STOCK ENGINES. MAIN IS # 75 ON STOCK C70M'S DON'T FORGET TO SET YOUR INTAKE VALVE CLEARANCE BEFORE RUNNING THIS NEW CARB. 201T JET-ISH STUFF 45MM WHERE IT BOLTS TO THE HEAD DIAGRAM SLIDE DIAMETER 13MM PETCOCK SIDE CHOKE LEVER SIDE MOUNTING FLANGE SIDE ADJUSTING SCREWS VIEW