Hello All ,
What to say..?? I have got more information about the C.8/AT in less of a week then I have for several years…even of I found some of your comments are contradictory (sorry! No hard feelings please) but still, thank you very much for taking the time and write your comments…it’s much appreciated…
David Hayward; thanks to your comments I found, what I believe it is, the homepage to the Parachute Regiment Museum in Aldershot
http://www.flying-museum.org.uk/home.htm. I have contacted them but haven’t got any answer yet…
Wim Sikkelbein; thanks for your tip-off about the book "Tugs and gliders to Arnhem" by Arie-Jan van Hees. I don’t know how many books I have about “Market-Garden” but I have never heard about this one before and I have already ordering it. The pictures from the book you included are one of those things that make me puzzled. The vehicle has the rounded fenders but it has its load of boxes for the 17-ponder anti-tank gun as far as I can see it and there are 15 of them mentioned by you but where should the 8 men crew be sitting..??
Hanno Spoelstra; thanks for your comments and the picture you added. This one have I never seen before but the other one mentioned I have. The picture here shows some nice details but is the fender rounded or flat and was the bonnet the one that was cut on its left side..??
Rob van Meel; your comment about the pictures from the book "Tugs and gliders to Arnhem" make sense. It seams to be some kind of an experiment version. It’s very exiting to read about you own C8-AT and I must admit that I’m able to do whatever it takes to get more pictures on it. From all angles, with all details and including pictures of the chassis…
Dear Rob, is it possible for you to contact me then it should be very appreciated... 
Once again, thanks all for the information so far…
Best Regards, Stefan