Hi Billy,
Have you checked out British Heritage Motor Industry Trust?
http://www.mgcars.org.uk/namgar/bmiht/bmiht.htm
You can send them your VIN and they will send you back a certificate with all kinds of build info, including the original paint color, the upholstery color, which dealer it was shipped to and when. It cost me $40 when I did it a couple years ago but it was worth it. Someone had swapped VIN plates on me, and they were able to give me the correct VIN number and year when I supplied them with the body and engine numbers. It might be a good place to start your genealogy research.
Jim H