Need 1973 Duster Front Bumper Measurement

Nope. Shock mounted front bumpers started in ‘74, but then in December they went back to standard mount bumpers because of some kind of production or supply issue. My ‘74 Duster, built in June of ‘74, had a standard mount front bumper. It also has all three mounting holes on the frame rails, so you can bolt standard brackets or shock mounts to it. Which is why I was able to put a ‘71 front clip on it without adding any frame mounts.

Ok, so it still boils down to '74 fronts having either. Just gotta I.D. them by the carriage bolt pattern and/or brackets.