Calculating the vehicle's manufacture date

• If your vehicle is fitted with an Australian compliance plate, the plate date is the date of manufacture
• If your vehicle is fitted with an import compliance plate or has no compliance plate, the date of manufacture is determined by a manufactures build plate, a chassis number or documentary evidence from the manufacturers records 
• If your vehicle does not meet either of the above requirements, we may determine the manufacture date based on information sourced from our registration database, historical data, or evidence from our vehicle safety and compliance expert.

REDMR2RED
Check your FACTS from the VicRoads Web Site.
 
https://www.vicroads.vic.gov.au/registration/limited-use-permits/club-permit-scheme/get-a-club-permit

Calculating the vehicle's manufacture date

• If your vehicle is fitted with an Australian compliance plate, the plate date is the date of manufacture
• If your vehicle is fitted with an import compliance plate or has no compliance plate, the date of manufacture is determined by a manufactures build plate, a chassis number or documentary evidence from the manufacturers records 
• If your vehicle does not meet either of the above requirements, we may determine the manufacture date based on information sourced from our registration database, historical data, or evidence from our vehicle safety and compliance expert.

Also go to the next month.  e.g. Compliance is November 1991, VicRoads take that as could be built 30th November, so they go to December 2016 as the earliest date for CPS.