21 - Panel Van
Model
Description
211 Cargo doors right, left hand drive
213 Cargo doors left, left hand drive
214 Cargo doors left, right hand drive
215 Cargo doors right and left, left hand drive
216 Cargo doors right and left, right hand drive
22/28 - Microbus
Model
Description
221 Cargo doors right, left hand drive, full middle seat
223 Cargo doors left, left hand drive, full middle seat
224 Cargo doors left, right hand drive, full middle seat
225 Cargo doors right, sunroof, left hand drive, full middle seat
228 Cargo doors left, sunroof, right hand drive, full middle seat
281 Cargo doors right, left hand drive, short middle seat
285 Cargo doors right, sunroof, left hand drive, short middle seat
23 - Kombi
Model
Description
231 Cargo doors right, left hand drive
233 Cargo doors left, left hand drive
234 Cargo doors left, right hand drive
235 Cargo doors right, sunroof, left hand drive
237 Cargo doors right, sunroof , left hand drive
238 Cargo doors left, sunroof, right hand drive
24/25 - Microbus Deluxe
Model
Description
241 Cargo doors right, left hand drive, full middle seat
244 Cargo doors left, right hand drive, full middle seat
251 Cargo doors right, left hand drive, short middle seat
26 - Pick-Up and Double Cab
Model
Description
261 Single Cab, tool compartment lid right, left hand drive
263 Single Cab, tool compartment lid left, left hand drive
264 Single Cab, tool compartment lid left, right hand drive
265 Double Cab, cab door right, left hand drive
267 Double Cab, cab door left, left hand drive
268 Double Cab, cab door left, right hand drive
27 - Ambulance
Model
Description
271 Cargo doors right, left hand drive
273 Cargo doors left, left hand drive
274 Cargo doors left, right hand drive
28 - Microbus - short middle seat
Model
Description
29 - Prototype
Model
Description
29 Prototype Transporters
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The following are sonderausfuhrungen or special models, that could be ordered directly from the VW Factory
Special Order Models
SO1 Westfalia mobile shop
SO2 Highroof mobile shop
SO3 Police: Mobile office/road traffic accident emergency vehicle
SO4 Police: road traffic accident emergency vehicle (from 1965)
SO5 Refrigerated vehicle with 140mm insulating board
SO6 II Refrigerated vehicle with 80mm insulating board
SO6 III Refrigerated vehicle for meat products
SO7 Frozen food transport with chiller
SO8 Pick-Up with hydraulic lifting bucket
SO9 Pick-Up with hydraulic lifting bucket
SO10 Pick-Up with hydraulic lifting bucket (smaller than SO9)
SO11 Pick-Up with turntable ladder
SO12 Pick-Up with steel shutter access to enclosed storage box on bed
SO13 Pick-Up with enclosed storage box on bed
SO14 Pick-Up, Kombi, or Panelvan with carrier for long pipes or poles
SO15 Pick-Up with hydraulic tipper bed
SO16 Double-Cab Conversion (Binz 1953-59)
SO19 Exhibition and display Bus
SO21 Pick-Up with wide-load bed (from 1965)
SO21 Panelvan fitted with Wido multi-layout shelving system
SO22 Westfalia camper kit
SO23 Westfalia camper with small roof hatch
SO24 Pick-Up (Single or Double Cab) with trailer for longer pipes or poles
SO25 Pick-Up low loader
SO29 Ambulance trailer with emergency disaster equipment (until 1964)
SO29 Catastrophe and disaster emergency vehicle
SO30 Ambulance with rolling stretcher undercarriage assembly
SO31 Pick-Up with heating oil tank and dispenser pump
SO32 Pick-Up with roller blind access to enclosed storage box on bed
SO33 Westfalia camper with small roof hatch
SO34 Westfalia camper with small roof hatch and white laminate cabinets
SO35 Westfalia camper with small roof hatch and dark wood cabinets
SO36 Side elevating roof (Dormobile top)
SO42 Westfalia camper
SO44 Westfalia camper with small pop-top in roof
SO45 Westfalia camper kit "Camping Mosaic" (similar to SO42)
http://www.thesamba.com/vw/archives/info/modelstype2.php 
