this is the best carburetor setup for him , one link for the adapter plate the other one for the carb
http://www.ebay.com/itm/Carb-Adapter-Holley-to-Quadrajet-Q-Jet-Spread-Bore-Square-Bore-Edelbrock-/221417214754?pt=Motors_Car_Truck_Parts_Accessories&hash=item338d7e9322&vxp=mtr http://www.ebay.com/itm/Edelbrock-1405-Performer-Series-600CFM-Carburetor-w-Manual-Choke-/380698334475?pt=Motors_Car_Truck_Parts_Accessories&hash=item58a363950b&vxp=mtr