Bugger, it's a Dandenong built van meaning Elizabeth BODY tag. I can tell you everything bar the BODY number, assuming that it was M20 GV7. Trim looks to be 67V. I reckon who had it before you has taken the plate off as they though it didn't match the other tags. Chase them up, they may still have it, once they know it was correct!
Original BODY number will be around 203500-204000.