There were seemingly a lot more '70 mid year changes. We should probably have that comprehensive list somewhere and try to hone in on the changeover dates. I'll look again but IIRC my 10E body has the bead for the decal location and I'm pretty sure it's an original door. Where's the date code on a door?
Rear defroster Metal Radiator top cover (fron one hole to two) Door internals (maybe same time as door itself?) Front wheelwell moldings 455 Oil pressure sender Wheels/tires (offerings & markings) Color of Plastic air cleaner scoop I'm sure there's more I'm forgetting or don't even know about.