I am new to these, so some of this may be wrong. Please correct any errors!
Years are 1964 to 1970.
While the vehicles evolved over the years as all do, this time frame had outside influences that mandated many changes too.
64-66 are similar, single masters, single gas tank strap.
In 1966, the gov’t got involved in cars. The Nader book and other external issues caused them to add standards for emissions and safety.
By 1967, they had the dual master cylinder.
By 68 they had the 2 tank straps. Cars had to have side markers. Our vans just had reflectors (Year?)
1968-up also saw the crash pads on the dash. The door handles changed too. Early had one that was similar to the window crank, later ones were flat and pulled in from the face of the door.
Trim levels were available, the wagons (seats and windows) were intended for family use and had fancy trim. The commercial stuff (cargo and display) was more plain.
The 170 slant 6 was standard, the 225 slant 6 and the 273 and 318 V8s were optional. The 198replaced the 170 by 1970.
Radios were optional. Heaters standard?
3 speed manual was standard (745 or 903), Loadflite automatic (727) was optional.
All had the 8.75 rear axle with 3.23, 3.55 or 3.91 ratio. Sur-grip was optional.
There were at least 2 different suspension ratings. Considering the A108 Sportsman camper, there may have been more.
Stabilizer bar in front was an option.
The suspension packages may have been grouped. I haven’t seen an order sheet or many brochures yet.
Tire sizes ranged from 6.50-13 to 8.15-15 in the manual I have.
More info
http://www.allpar.com/trucks/vans.htmlI have not found any manuals online but there is one Sportsman brochure
http://dodgea100.webs.com/1967sportsmana100.htmHere are paint codes.
http://www.mymopar.com/paintcodes.htmAs for the fancy dash trim, I think it went away with the crash pad. The trim goes over the area where the pad bolts to the dash.