How to Know a REAL H Code 70 Swinger 340 Dart

I am would like to know to tell a Real H code 70 Swinger 340 dart from a clone 340 car. My car has the dash vin tag, fender tag, door tag, Broadcast sheet, washer on k frame, 2 duel exhaust hangers, dart swinger emblem on trunk, hood scoops, numbers motor, rear-end etc....( can not find on Trunk lip or radiator support)...
Does anyone have any other areas where the body numbers would be? Or any other areas that make a H code car? Thanks for your help..