Volvo N303NTN - Help needed

NARPO recently got a message from a Matt Goodall who would appreciate help from anyone who can give him some information into the  pictured ex Durham patrol car. 

"I am restoring an ex Durham Volvo 850 T5, N303 NTN and could do with some help from officers who were in traffic at the time"

If anyone can help please email Matt at:  Matt@Good.al