In "my" 251/1 the exhaust pipe, or "Auspuff" as it is (?) in German comes like this...
But how the pipe is bending and turning between this and the engine, have not seen really any good reference pictures.
Guessing it should be pretty similar with the 250 ?
But as those two pics above are from 251:s... I the found this...
That based on the text it was a 250/1 found in Poland
And here you can find some nice pics of those 250:s still excisting...a PDF file
http://the.shadock.free.fr/Surviving_Sdkfz_250.pdf
I think the pictures will help Bruce, the pipe does not go through the floor, but out through the left side..
- Kari