Numbers matching...?

I think the operative phrase here is: "I took it to a local restoration shop". Convincing you to do a total "ground up" restoration and hopefully having them do the work, is their business and there's nothing wrong in that, but is that really what you want? If you like driving the car and it meets your needs, then enjoy it as it is and fix it up as you go along.
The cost of a total restoration is astronomical and will far exceed the value of the finished project. If you watch Barrett Jackson, Mecum or any of the other auctions, you'll see that most cars sell for much less than the cost of restoration. It sounds like you've got a really nice car there, enjoy it!