I have a K32 top single with a 3 notch adj rib that is non ported and has a fixed choke of 32th. Block ears excellent and bluing is good. The bore is 735 and the POI is supposed to be 50'50 to 80/20. (( $2800 Delivered to your address in the Lower 48 )) Any questions please send a conv message for info and contact # - Thanks Bob