I had only a bill of sale for my TR3. CA DMV didn't even want to see the bill of sale, they just ran a check for the VIN number being reported stolen and had me sign a "Statement of Facts" about where and how I got the car.
As long as the car is not in their database, and older than about 1970 (or maybe its 68), I don't think you'll have a problem. For the 71 Stag I brought in from OK, though, they wanted the CHP to inspect the VIN plates and there was some hassle when they discovered that one plate was missing and the other was obviously tampered with. But all they did was assign it a new VIN number and make out the paperwork (including title) with the new number. They didn't even charge extra for the new tag riveted to the B post.