Need some assistance 70 vs 71 340 4 speed Duster

70 Duster 340: Radio - thumbwheel type. Turndown Exhaust tailpipes - no chrome tips. no dual body color Rallye mirrors, just a single, drivers side chrome, and offered late, dual chrome mirrors. Light argent colored 10 hole Rallye wheel centers. 340 came with a Carter AVS Four Barrel carb.

71 Duster 340: Knob style radio. Chrome exhaust tips available, Dual painted mirrors. Dark argent colored 10 hole Rallye wheel centers. 340 came with a Carter Thermoquad four barrel carb.