The 1971 "Mild & Wild" boxes are interesting and different due to the box top art being oriented vertically, rather than the usual horizontal orientation:
The 1972 Plymouth Duster was largely unchanged, save for eliminating the custom option, leaving the kit as a 3'n'1 with stock, drag and "wild put on" build options. It was again molded in yellow, but the drag version was "Akron" Arlen Vanke's Super(?) Stock car this time around. Drag slicks were included, but the stock Rallye wheels were the only wheels present, making for an odd looking drag car.
The 1973 MPC Plymouth Duster kit once again included three building options- stock, street machine, and Super Stock drag racer. The "wild put on" parts were gone, replaced by more serious racing and performance equipment, such as under-bumper ram air tubes, hood scoop, rear spoiler, chrome-plated stock and Fenton mag wheels, and an extra 426 Hemi engine to go along with the carried over 340 small block. Also changed for 1973 was the plastic color, and the kit was now molded in white.
The 1974 Duster annual was again a 3'n'1 kit with stock, drag, and street machine options, with examples of each shown on the box top. A
The main changes for the '75 Duster annual kit were the decals and new optional 6-slot(!?) wheels, all of equal width/depth, replacing the previous year's Motorwheel Spyders. The same three building options from '74 were carried over (okay, the street machine version was now called "custom"), and the kit was again molded in white:
As far as I know, there was never a '76 Duster annual kit, as the F-body Plymouth Volare was launched in '76 as the A-body Duster's replacement. MPC did release annual '76-'80 Plymouth Volare kits, but the F-bodies deserve their own topic, so this is the end of the line for the MPC Plymouth Duster annual kits...or is it?
I'm not sure how closely the MPC Pro Stockers series kits are related to the annual kits, so if someone can educate us on those, they may be added to this topic.