External or Internal Flywheel… need asst.

Trying to determine if my 340 is internal or external based off the flywheel pics and crank photo attached. Car is 73’ but it’s not the #’s matching motor and prev owner said it has steel crank. Based on the numbers on flywheel I know it’s 130tooth and the holes indicated to me internally balanced. Just want to make sure prior to ordering a new one, Thanks in advance