Per ABOS Service Manual
1966 Chrysler 20hp
Flywheel Torque Manual Start 540 inch pounds
Flywheel Torque Electric Start (armature screw) 240-300 inch pounds...
Point Gap 0.020"
Spark Plug 0.30" Champion J4J or modern equivalant.
1965 West Bend/Wizard
Flywheel nut torque calls for 600 inch pounds
1965 is first year West Bend made Wizards.
Chrysler purchased West Bend just prior It appears
Chrysler brand started with 1966 model year.