Thanks Ed, this site has turned me into a numbers fanatic!! The car looked very original when I bought it back in about 1980 and so far the numbers I have found bear that out.
Would you believe back then neither myself or my friend that I bought the car off had any idea even about engine number matching vin number!!
It wasn't until another 6 or so years had passed that I discovered that fact by a chance comment being made at a motor trimmer where I had left the car for new carpet.
I immediately rang my friend to tell him about this number matching, he was shocked, raced outside to check the numbers on another camaro he had just bought and was over the moon to discover that they matched on his car as well!!