Quadrajet vs Edelbrock 1405

If you use the 1405, get the thick base gasket from Edelbrock as it helps keep the carb cooler and prevents the fuel from boiling. I believe you also need Edelbrock's adapter plate to mount the 1405 on a Performer intake to prevent a vacuum leak. They also sell a specific Mopar throttle lever that bolts on to the throttle arm on the carb to help get your kickdown linkage to work properly.