1972 Duster 340 Questions.

if it was built after April 71, then the engine would have been Blue from the factory. have you cdhecked to see if its numbers matching and the buld date on the block? if you have the build sheet or the fender tag, you should be able to determine the Build date. The 72's did have the twister duster in the rear panel stripes, the 71's did not. Per Galen, many late build 71's had 72 parts, but normally later year models usually didn't have prior year stuff unless they were built around the time the model year change production was run. Hope this helps. Nice looking Duster...