67-69 vs 70-72 Dodge Darts
books calls a 1970 duster at 188.4 which is exactly that of the 68 barracuda and really when looking into the history of how the duster came to be....one could almost say that it was the A-body replacement for the barracuda since the barracuda name plate was lost to the new E-body in 70.
The duster was designed on a budget using mostly what was already in existence to cut tooling costs.