The PSC 251 would be the base model but would need a bit of work.
The Sdkfz 251/D Model conversion sprue threw up small seats and a radio set.
Which I trimmed down from the surrounding plastic
The 251 had the right hand side locating lugs removed and I shaved down the locator pin from the rear hull floor.
Seat locators were cut off
Tried a a couple of ideas out using Bluetac to hold things in place
Made up storage boxes using strip styrene
Check for fit
Filled in the rear bracket hole and ready for the undercoat. I haven't done the external antennas yet and any crew will obscure the lower part of the radio mount