the hemi darts came from the factory with 14" rear wheels so the quarters were usually cut by the new owners. i think that the cars may have come with a template from mopar but i'm not sure. i know i saw somewhere online recently where you could get a reproduction of the template.
-Tim
all of the original hemi darts came from the hurst factory with the radiused wheelwells. I think a tamplate for cutting them can probley be found somewere on the net, i see them on ebay sometimes.