Body swap question

Hello everyone, my names Dave and I'm a new member. My question relates to car modification and the legal nightmares attached! 
 I recently had an accident in my 1978 Citroen dyane van. This has resulted in a bent chassis and messed up front end. It is repairable however. I have found a donor car and want to swap the body of my van onto the replacement rolling chassis. The only worry I have is that I would be attaching a commercial van body onto a saloon car chassis ( the 2cv, dyane, acadiane van chassis are all the same) in the eyes of the DGT log books. My van is described as a Dyane 6, "commercial" on the technical inspection certificate. Is this a problem that will result in meltdown at my local ITV centre? What ids the best way to approach this problem? Any answers gratefully received!!

Hi Dave

Welcome to EOS, I'm afraid, I personally can't help but maybe someone here can, hopefully. If not I would suggest going to a local mechanic and asking or going to your local ITV centre.

Best of luck!