Are all parts on a 1970 beetle interchangeable with a1974 super beetle?

No, not all parts of a 1970 Beetle are interchangeable with a 1974 Super Beetle. While both models share some components, the Super Beetle introduced significant design changes, particularly in the front suspension and body style. Additionally, the engines and electrical systems differ between the two models. Therefore, it's important to verify compatibility for specific parts.