Can a 78 Volare cruise control setup work in a 74 duster?

I dont see why it wont as long as you have all the pieces from the donor. The turn signal mounted cruise control stick and wiring should fit your 74 A body column. Years ago we installed a cruise control in my dads 79 lil red express. The die cast pieces on my dads non tilt 79 truck column are the same as a 73 up dart column.